Model # NN-SN643S

Internet #205370499

Panasonic 1.2 cu. ft. 1200-Watt Countertop/Built-In Microwave in Stainless Steel with Inverter Technology and Sensor Cooking

Discontinued Panasonic

1.2 cu. ft. 1200-Watt Countertop/Built-In Microwave in Stainless Steel with Inverter Technology and Sensor Cooking

  • Inverter supplies consistent cooking intensity at all levels
  • Measures 21 in. W x 16 in. D x 12-1/4 in. H
  • Genius Sensor gauges steam level, auto-adjusts cooking
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Frequently Bought Together

Product Overview

This Panasonic Countertop/Built-In Microwave Oven in Stainless Steel uses Inverter Technology to supply a steady stream of cooking power that preserves the texture and flavor of foods. Unlike other microwaves that use intermittent bursts of high-powered blasts, this 1.2 cu. ft., 1200 watt unit delivers consistent, measured amounts of power—even at lower levels—to precisely heat up foods and beverages. With Inverter, you can braise, poach and even steam more delicate foods, all with the speed and convenience of a microwave. With a touch of the Genius Sensor cooking button, this appliance takes the guesswork out of microwaving 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. Plus, with Turbo Defrost, you can thaw foods expediently and shorten your meal prep time.

  • Compact 1.2 cu. ft. capacity microwave oven for countertop or built-in installation
  • Offers 1200 watts of cooking power with 10 power levels for versatile heat-up options
  • Removable 13-2/5 in. glass revolving turntable lets foods and beverages heat up evenly and thoroughly
  • Outfitted with tactile membrane control panel with green 4-digit display for easy operation
  • Equipped with stylish stainless door with push-open door release
  • Inverter technology delivers a seamless stream of power for precision cooking
  • Inverter turbo defrost feature supplies fast, even defrosting
  • Genius one-touch sensor cook and reheat eliminates guesswork
  • 12 preset auto-cook menu items offer ease of use and convenience
  • Multi-stage cooking for up to 3 stages lets you define different time/intensity increments
  • Programmable features include Popcorn, Keep Warm and Quick Minute for no-hassle operation
  • Clock, kitchen timer, standing time, delay start, plus more/less key offer an abundance of timing options
  • Child lock feature safeguards the unit from unauthorized use
  • Optional trim kit sold separately (model 205113727)
  • Fashioned with a stainless steel front and silver body
  • 1-year limited warranty

Info & Guides

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Capacity of Microwave (cu. ft.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Appliance Type
Countertop Microwave
Stainless Steel
Color/Finish Family
Stainless Steel
Door Swing/Style
Right to Left Swing
Microwave Door Release
Push Button
Microwave Features
Clock,Cooking Light,Interior Light,One Touch Cooking,Safety Lock,Timer,Turntable
Microwave Settings
Defrost,Delay Bake/Delay Start,Keep Warm,Sensor Cook
Microwave Size
Number of One-Touch Settings
Number of Power Levels
Product Weight (lb.)
Wattage (watts)

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
1 year limited
Safety Listing

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Customer Questions & Answers

Does it have a turntable and glass plate included?

If not do you sell them as accessories?
Asked by: Micro12
Answered by: Babs
Date published: 2016-03-17

has an interior light??

Asked by: pc
This does have an interior light.
Answered by: CommunityAnswer
Date published: 2016-02-04

i have panasonic 1.2watts microwave and inside near right side a small cover about 1" by 2" need a new is burnt.

i have a small paper like cover about 1"by 2" con rightside inside where can i order that and what its called.
Asked by: varsha
Thank you for your recent inquiry with The Home Depot, Varsha. If a part of the inside of your microwave is burnt, you may have a problem with the microwave that replacing that part may not fix. You may want to consider a repair or a new microwave. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
Answered by: THDSupport
Date published: 2015-12-29

Can this microwave be built in above a stove?

Asked by: dogsitter
Yes, this can be installed either as a countertop microwave or as a built-in.
Answered by: CommunityAnswer
Date published: 2015-10-29
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Customer Reviews

1.2 cu. ft. 1200-Watt Countertop/Built-In Microwave in Stainless Steel with Inverter Technology and Sensor Cooking is rated 4.2 out of 5 by 22.
Rated 5 out of 5 by from Awesome Microwave Easy to understand controls and very efficient! Very happy with purchase!
Date published: 2014-10-08
Rated 5 out of 5 by from love!!! Love this microwave!! It heats the food up SO fast and evenly. Definately would buy again.
Date published: 2014-11-11
Rated 3 out of 5 by from Average to good overall The positive about this microwave is that it heats quicker than our old one. The things that made me question whether to keep it were the noise and the finger marks. It has a louder motor than our previous one. That bothered me at first, but we only use it for a couple of minutes at a time, and I'm getting used to it being noisy. Also with the first use, the surface of the door release button kept the finger print marks. The finger marks don't seem to wipe off. But it's more trouble to return it than to keep it, so we'll keep it. Those things bother you when the product is new, but we probably won't notice them after a while. I do like the 30 second button.
Date published: 2015-05-01
Rated 5 out of 5 by from Great product - great price Got my Panasonic microwave and it works really well. No hot spots. Much improved from my old microwave and looks nice and updated too.
Date published: 2015-03-25
Rated 5 out of 5 by from Alyce I really like this microwave as it does everything it says it does. The only thing is I wish the light would come on when the door opens. The other thing is the dimensions given were for the exterior and I was looking for the interior. So it was a bit smaller than I had anticipated.
Date published: 2015-05-14
Rated 5 out of 5 by from A Kitchen Treasure! I haven't tried all of the features yet but everything cooks quicker. My instant coffee is now ready a full minute faster. It cleans easily. Any fingerprints on the stainless steel wipe off easily. I do find the touch control buttons are a bit stubborn. You have to press them VERY firmly and focus on what you are doing. The instruction book is well-organized and I trust the brand. It does warn you not to use it near a stove so I don't use the two adjacent burners on my electric stove.
Date published: 2016-01-26
Rated 4 out of 5 by from Good Value Very nice oven... needs light on door switch. Manual is a bit confusing.. it combines 2 models.
Date published: 2015-10-06
Rated 5 out of 5 by from Works for me! Just started using my new Panasonic microwave and I am very satisfied so far. I needed a small appliance given the space I have in my kitchen, yet I did not want a mini-microwave. This one is perfect. Easy to use, not too noisy, efficient. I don't cook in a microwave, I really use it only to reheat, so I can't comment on all the features, but I'm very pleased with the speed at which it reheats food. I recommend it (I had originally bought a different brand, which I returned because it was very noisy and did not work well).
Date published: 2016-04-19
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