Outlets & Accessories

Panasonic 1200W 1.2 Cu. Ft. Countertop/Built-in Microwave with Inverter Technology NN-SD681S Stainless

Posted On September 30, 2015 at 1:32 pm by / No Comments

Panasonic 1200W 1.2 Cu. Ft. Countertop/Built-in Microwave with Inverter Technology NN-SD681S Stainless

Product Features

  • Inverter Technology for even cooking and delivering delicious flavor and Inverter Turbo Defrost for quick defrosting
  • Elegant 4-Digit Blue Readout LED Display with Programming Icon Dial and buttons for quick programming
  • 1200 Watts of High Power; One-Touch Genius Sensor Cook and Reheat for automatic cooking settings
  • Measures 15 15/16″ (D) x 20 3/8″ (W) x 11 7/8″ (H), 25.3 lbs., Stainless Steel face
  • Please note: upper left-corner door has a small indentation to allow the door to open smoothly.

Product Description

Inverter technology
Panasonic Inverter microwave oven

Stainless-steel 1.2-cubic-foot microwave oven with Inverter technology and blue read-out display. view larger

Panasonic NN-SD681S Stainless-Steel 1.2-Cubic-Foot 1200-Watt Inverter Microwave Oven

The Genius Prestige Countertop/Built-In Microwave Oven

With its stainless-steel door and silver wrap, this 1200-watt microwave oven by Panasonic makes a stylish and convenient addition to any contemporary kitchen. The 1.2-cubic-foot unit with its 13-1/2-inch turntable excellently cooks and evenly heats anything from breakfast foods and after-school snacks to dinnertime meals and appetizers when entertaining. Ideal for busy professionals and on-the-go families, the microwave oven provides quick and easy meal preparation while nicely accommodating and enhancing surrounding decor.

Panasonic Inverter microwave oven

The countertop microwave can be installed in the wall using an optional matching trim kit.
(Trim kit shown may not represent actual trim kit.)

Shrimp Pasta

Make shrimp pasta and other delicious dishes.

Inverter Technology

Moving Beyond Just “Heating Things Up”

Many people just use their microwaves for making popcorn or warming up soup because most microwaves just have one temperature setting–high. Conventional microwave ovens might have a low-power setting, but this is achieved by “pulsing” the high-power setting on and off rather than by emitting a steady stream of low-powered energy.

Panasonic’s trailblazing Inverter technology delivers true, variable microwave power, which means even temperatures and consistent textures throughout the food being cooked. The consistent delivery of microwave energy allows delicate foods to simmer without the edges and surfaces overcooking, so foods have the look and taste you expect–without the wait.

The Inverter microwave oven perfects the art of cooking, taking microwave cooking to a whole new level. You’ll experience delicious food that better retains its color, nutrients, and flavor and that’s easier and faster to prepare. Oh, and you can still make great popcorn.

Single, Compact Power Supply

Furthermore, the Inverter power unit is smaller and lighter than conventional microwave circuitry (aka the heavy, enclosed side of the microwave), which allows for more interior space to fit that favorite casserole dish, without increasing the oven’s overall exterior dimensions. Weighing just 25-1/2 pounds, the oven’s roomy interior measures 14-3/8 inches long by 13-15/16 inches wide by 9-15/16 inches high, while its compact exterior measures 15-13/16 inches long by 20-11/16 inches wide by 12-1/4 inches high.

Additional Features

Genius Microwave

With the touch of Panasonic’s Sensor Cooking button, the microwave takes the guesswork out of creating a great meal, by automatically setting power levels and adjusting cooking or defrosting time.

The sensor measures the amount of steam produced during cooking, and signals the microprocessor to calculate the remaining cooking time at the appropriate power level automatically.

Inverter Turbo Defrost

Panasonic evolved the Turbo Defrost feature, which allows you to defrost foods even faster than previous Panasonic Auto Defrost. Panasonic Inverter Turbo Defrost technology is an advanced microwave sequencing system using the inverter continuous-power delivery method.

Inverter Melt-Soften Button

This feature allows you to melt or soften a variety of foods such as butter, cream cheese, ice cream, and chocolate.

One-Touch Sensor Cook and Reheat

The Sensor adjusts power levels and calculates cooking and reheating times–automatically–for various food types like omelets, pasta, frozen entrees, potatoes, vegetables, beverages, and more.

Pop-Out Dial

With a spin of the dial, the easy-to-use pop-out dial is a departure from the standard keypad found on most microwave ovens.

Keep Warm Feature

A pulsing delivery of very low microwave power keeps food temperatures at a constant level–without overcooking. So, foods like stew, gravy, and desserts remain warm in the oven for up to 30 minutes after cooking.

Blue LED Display

4-digit neon blue LED display provides a high-end look that complements any kitchen decor.


Time-of-day clock and timer provide exceptional convenience.

Push-Button Door Release and Stainless Steel Front

Elegant, attractive, and easy-to-open, the microwave will look its best even when preparing some of the messiest recipes.

Child-Safety Lock

For safety, the child lock prevents electronic operation (door still opens). Press Start three times to lock (a key symbol will be displayed); press Stop/Reset three times to cancel.

Trim Kit (optional)

The Prestige countertop microwave can be installed in the wall using an optional matching trim kit accessory (27-inch model NN-TK621SS).

User-Friendly Control Panel

User-friendly control panel with blue read-out digital display.

Please Note: upper-left corner of the door has a small indentation to allow the door to open smoothly.

Click here to view the set-up guide.

Make Mealtime Marvelous

Create all your favorite recipes, quickly and easily, with Panasonic’s Inverter microwave oven.

  • Eggs
  • Appetizers
  • Soups
  • Casseroles
  • Fish/seafood
  • Meats
  • Pasta/grains/cereals
  • Poultry
  • Sauces
  • Vegetable side dishes
  • Pies
  • Desserts & breads

Culinary Institute of America

CIA Cookbook

Free cookbook: Master Chefs Microwave Recipes Made Easy.
Click here to view

Panasonic & The Culinary Institute of America Get Things Cooking

Panasonic Inverter microwave ovens have been named the microwave-cooking method of choice by the prestigious Culinary Institute of America (CIA). Panasonic and the CIA have teamed up to develop a series of healthy and delicious recipes created especially for the Panasonic Inverter microwave oven.

Free Online Recipes

The Master Chefs Microwave Recipes Made Easy cookbook includes preparation tips and professional techniques that will have you cooking like a pro with your Panasonic microwave oven in no time.

Choose from a variety of mouthwatering recipes–from goat cheese and red onion quesadillas to corn chowder with chilies and Monterey Jack to Mediterranean vegetable frittatas. Bon appetite!

Panasonic 1.2-Cubic-Foot Inverter Microwave Ovens

Model NN-SN651B








Oven Capacity1.2 cubic feet
Wattage1200 watts
Turntable Diameter13-1/2 inches
HousingBlackWhiteStainless-Steel Front with Silver Wrap
Control PanelFlat Panel MembranePop-out Dial + Button
Display Panel4-Digit DisplayGreen 4-Digit DisplayBlue 4-Digit Display
Performance / Features
Auto Cook/ReheatYes
Power Settings10 Levels
Cavity Dimensions (LxWxH inches)14-3/8 x 13-15/16 x 9-15/16
Unit Dimensions (LxWxH inches)15-13/16 x 20-11/16 x 12-1/4
Trim Kits (optional)27″ ModelN/ANN-TK621SS

List Price: $ 199.99

Savings: 38

Your Price: [wpramaprice asin=”B005BFZ5N6″]


Customer Reviews

349 of 364 people found the following review helpful
1.0 out of 5 stars
Died after two months / poor warranty service from Panasonic, December 29, 2012
Redwood George (Sonoma County, California) – See all my reviews

Verified Purchase(What’s this?)
This review is from: Panasonic 1200W 1.2 Cu. Ft. Countertop/Built-in Microwave with Inverter Technology NN-SD681S Stainless (Kitchen)

While I liked the idea of the “Inverter Technology” that lets you easily cook at lower power without duty cycling the microwave, that feature doesn’t outweigh Panasonic’s poor warranty policies. My microwave died after two months of use – everything was working fine one moment and then the lights went out, dead as a doorstop. (Being an electrical engineer, I think it’s a safe assumption that the power supply is what died but that’s only an assumption)

Had this died within the 30 day period, Amazon would have printed out a shipping label, had UPS show up at my front door to pick up the defective unit and most likely cross-shipped a new microwave out to me so I could have a replacement in just a matter of days. Instead, since it was outside the 30 day period, I had to go through Panasonic’s warranty service. Their only option is to have me hand-deliver the defective product to an authorized Service Center; the nearest one is a 90 minute drive from here. That would be understandable if I lived in rural Nebraska but I live in a heavily populated area and would probably pass thirty or forty Starbucks and at least three Best Buys that I can think of on the way to the Service Center. There’s no option to ship the product by UPS; I have to drive it to the repair center. Of course they’re unlikely to repair or replace the microwave on the spot so that’ll be another three hour round trip to get the repaired microwave. This is a somewhat pricey microwave but to have to take six hours out of what little free time I have on the weekends just isn’t worth the trouble. I’ll just chalk this up as an expensive lesson in how not all manufactures are customer-centric and go look for another (non-Panasonic) microwave.

I can’t comment on the overall reliability of Panasonic microwaves – I only have my own experience to go on. Perhaps out of a thousand appliances only one dies in under three months and I’m just lucky this time around.

As far as the design goes, some things I liked, some things take some getting used to. The spin knob instead of numeric keypad is “cute” and does the job but it does take some getting used to. It’s pretty easy to overshoot the time you want and have to backtrack to get to your goal. The “always-on” variable power setting is pretty nice – I’d much rather use continuous power than have it cycle on and off to approximate partial power. I don’t think it’s quite linear, though – cooking at half power seems to deliver closer to two thirds power – two minutes at half power is much hotter than one minute at full power. Again, you can get used to it and make adjustments based on experience.

The “auto cook” feature was a bust. I eat plenty of frozen dinners and the cooking time was a) never right (food came out much hotter than if I’d just followed the directions on the box) and b) took significantly longer (I think it cooks at low power until it detect steam, then a quick blast and you’re done) If the frozen box said cook for six minutes, then “auto-cook, frozen dinner” would take eight to ten minutes. That feature was quickly ignored, sadly.

Also, there are plenty of gripes here about the light not coming on when you open the door and let me add to that long list. While you don’t -need- the light to put a plate into the microwave, it’s a nice thing to be able to see what’s going on. It’s really a matter of “what were they thinking?” when the designers opted to have a dark, unlit box rather than the (very standard) lit interior. There’s no getting used to that one, it just seems wrong. Not that it’s horribly inconvenient but why did they feel the need to make it even a little bit more inconvenient than necessary?

Would I buy this unit again (if I hadn’t had reliability issues?) Maybe, maybe not. I can’t say that the features that make this microwave more compelling (variable power, large turntable) outweigh the disadvantages (useless auto-cook programming, no interior light, odd dial interface). There are other microwaves out there that are competitive with this one and there’s no distinct advantage with going with this particular product line…


Quick update, 24 hours after posting this review. On contacting the Panasonic “Customer Service Center” I discover that it’s a guy fixing appliances out of his home in a residential area! He actually asked me to call ahead before coming down so that he could make sure he’s home – and mentioned that between 8 AM and 9 AM was most convenient for him. I was expecting at least a commercial storefront but this seems awfully small time to be the best that Panasonic could offer!

Wanting this issue to be over and done with, I went out and bought a microwave from a different manufacturer -…

Read more

Help other customers find the most helpful reviews 

Was this review helpful to you? Yes

427 of 452 people found the following review helpful
4.0 out of 5 stars
Takin’ one for the team – – – quick first review – EDITED, October 6, 2011
A Thompson “Skeptic” (Harrisonburg, VA United States) – See all my reviews

Verified Purchase(What’s this?)
This review is from: Panasonic 1200W 1.2 Cu. Ft. Countertop/Built-in Microwave with Inverter Technology NN-SD681S Stainless (Kitchen)
I’ve only had this 2 days, but I thought I’d get a quick review up on it.
This oven is so new, even Panasonic didn’t know about it. I called them up, and their customer service knew nothing. A search on the Panasonic website came back blank.
So, what the heck, I bought it. It appeared to be very similar to the SD688 models, with one exception. The digital display got panned on the 688 as being hard to read from a normal standing angle. I guessed that this fancy blue display was their answer to that, and I was right! The bright blue display is very easy to read up close without bending over., and from an angle.
I rarely cook in a microwave, so all of the fancy button options are moot. “Inverter Melt”, “Popcorn” “Inverter Turbo Defrost”. If I have to keep the manual handy to use my microwave, I’m not likely to use that feature.
I did try the “Sensor Reheat” feature on some boneless chicken. It stopped it at the right time.
I like the dial feature, it’s very intuitive. The one minute button is nice.
One thing a Microwave does, is it sits there on the counter most of the time doing nothing. This does that very well. The SS finish and the square lines look really good. At 20″ wide, it just right for my counter. It’s taller than my old oven, so I can fit my salad dressing cruet in there.
Another thing a microwave should do is last for years. We’ll have to see on that one.
I will update as more details become apparent.
More observations 10/12/11:
I tried the Sensor Reheat a few more times. It seems to work pretty well. It’s weird though if your timing your food prep, setting the table, or whatever, because there’s no preset time.
The ‘Inverter Melt’ function works quite well. Here is where the inverter technology makes a difference – it actually heats at low power. Conventional microwaves just cycle full power off and on to achieve ‘low’ power.
I tried ‘Sensor Cook’ with some potatoes. I set it on 3. Silly me – 3 is for omelets. For potatoes, use 7. Fresh vegetables – 8. There’s no explanation what the different settings actually mean. Forget it.
So with all this fancy technology, Panasonic could have added one basic non-technological feature:
The light. It only comes on while cooking. But not when you open the door. Really? That’s enough to almost give me buyers remorse. It never occurred to me that this feature, that’s been around for 30 years, would be missing.

Edit 2/18/12: After 4 months and prompting by a fellow reviewer, I’m bumping this to 4 stars. Mechanically, the engineering is excellent. The inverter technology is extremely useful, making it a more versatile and valuable tool in the cooking process.
Still, the software side is gimmicky and borderline absurd . Take the Melt & Soften button, for 1 example. I can melt butter by setting the power to 1 or 2 and 30 seconds. Or I can use the Melt & soften button, saving me several whole button pushes! I have a choice of 15,16,17,and 18. But,it would be nice to know which power setting that button selects, instead of “Butter, Cream Cheese”, etc. Imagine if your conventional oven had settings for Ham, Chicken, and Turkey, but didn’t tell you the temperature if you use them. I just don’t get it. Panasonic, please just tell us what these programs really mean.


Help other customers find the most helpful reviews 

Was this review helpful to you? Yes

95 of 98 people found the following review helpful
2.0 out of 5 stars
Stopped working after 3 years. Do not recommend this microwave., January 30, 2012
J. K. Paasch (Cincinnati, OH USA) – See all my reviews

This review is from: Panasonic 1200W 1.2 Cu. Ft. Countertop/Built-in Microwave with Inverter Technology NN-SD681S Stainless (Kitchen)

Update (January 2015)

Microwave is now dead. After 3 years of moderate use the microwave began acting erratically. The microwave would stop running after 3 seconds or only run on ‘Popcorn’ mode, etc… for about one week before it finally quit running entirely.

I’ve knocked my rating from 5 stars down to 2 stars. I expected more than 3 years of use from a microwave that was hardly ever tasked with anything more challenging that reheating food on occasion. It was a very nice microwave while it lasted which is why I’ll leave the review with 2 stars (maybe I was unlucky), but I can no longer recommend this unit.

I’m leaving the original review and yearly updates in their entirety below for the sake of information and posterity. However, I do NOT recommend this microwave.


(Original 5 star review)

We’re a family of 4 with two little ones. We don’t actually “cook” with microwaves too often, but primarily use our microwaves to heat veggies, reheat left-overs, etc… With regards to our needs, the Panasonic NN-SD681S has met and exceeded our expectations.

Coming from a 900 Watt microwave I think our favorite feature is just how much more quickly this 1200 Watt microwave accomplishes its tasks. Steaming vegetables takes about 1 minute less than with our previous microwave. Heating a beverage takes less than a minute now. I will say though that steaming can really kick up alot of moisture inside the microwave. It gets moist to the point of being fairly wet, needing a towel dry.

I’ve not used the sensor reheat feature on any microwave before this one. Frankly I expected the sensor reheat to be something of a gimmick. However it does an outstanding job of reheating food thoroughly. As a test I reheated a plate of chicken, potatoes, and veggies together and was surprised how each item was more or less ‘appropriately’ reheated. Only a couple of instances over the past few months when something was a little cooler on the inside than outside after a reheat.

As a parent of young children I appreciate the child lock feature. Which is a code that when entered sets the microwave into an unresponsive, stasis mode. Enter the unlock “code” to reactivate. The child lock is easy to use, and as long as your kids don’t learn the “code”, it should keep the occasional, or habitual button masher from accidentally turning the microwave on when you’re not looking.

This unit is loaded with a variety of features and settings. Some of which may not be familiar to all users. Fortunately Panasonic provides a pretty straightforward users guide that does a good job explaining the various features and their functions.

Wireless users be aware, this microwave, located in about the center of our 600 sq ft first floor, decimates the wi-fi signal for the entire floor when running. Music, movies, downloads, anything that requires a wireless signal stops shortly after we begin using the microwave. Changing router locations (located on the 2nd floor) did not help whatsoever. Not a deal breaker, but those whose smoke/CO2 detectors are interconnected via wi-fi should probably make note of this. I’d guess this is a potential problem for most microwaves, so I won’t knock Panasonic for this.

Unfortunately this microwave does not have the best alert/reminder system. It beeps 5 times after finishing its cycle. That’s it. I haven’t noticed it providing any follow up warning of completion beyond that. Our previous unit had a steady, 4 second beep and would beep every couple of minutes thereafter until it was opened. A much better system in my opinion.

Other thoughts. It turns out that no light when opening the door isn’t such a big deal for me. The blue LED screen is easy to read. Stainless steel is a very sleek and modern look, and it does pick up prints easily. This unit is a space saver compared to similar units. Coming from an all push-button microwave, I appreciate the retractable knob control more than I thought I would.

Looking at the whole picture in terms of price, features, and performance, and I feel the NN-SD681S is a solid value and would recommend it to anyone currently in the market for a microwave.

Update (April 2013):

The microwave continues to perform well after more than a year of moderate use. We barely notice it’s there, which is a testimony to its effectiveness.

Two things I have noticed:

1. It’s loud. Forget having a conversation with someone across the room when this thing is on. Though given that we don’t run it for more than a few minutes at at time (boiling veggies for example), it’s not a big hindrance to us.

2. The door…

Read more

Help other customers find the most helpful reviews 

Was this review helpful to you? Yes

Share your thoughts with other customers:

 See all 810 customer reviews…

Leave a Reply