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1.2 Cu. Ft. Countertop/Built-In Microwave with Inverter Technology NN-SN661S Stainless


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  • Enjoy faster cooking times with 1200 watts high power
  • Microwave Inverter technology delivers a seamless stream of cooking power
  • Advanced Inverter Turbo Defrost speeds up defrosting time
  • Automatic sensor adjusts power and times for different foods
  • Cooking instructions displayed in English, Spanish or French
  • Choose countertop or built-in installation, trim kit sold separately
  • Dimensions: Outside - 12 1/4" x 20 11/16" x 15 13/16"
$164.95 $139.99
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Inverter Technology

Panasonic Inverter Technology perfects the art of cooking with microwave ovens, delivering delicious flavor, excellent color, and superb shape and texture in the foods you cook. The consistent delivery of microwave energy means delicate foods can simmer without the edges and surfaces overcooking. Foods have the look and taste of conventional-oven cooking without the wait!

Inverter Turbo Defrost™

Panasonic has succeeded in evolving the Turbo Defrost™, which allows you to defrost foods even faster than previous Panasonic Auto Defrost. Panasonic inverter Turbo Defrost technology is ad advanced microwave sequencing system using the inverter continuous-power delivery feature.

Menu Action Screen (multi-lingual)

The Menu Action Screen is like having a chef to assist you in the kitchen. It scrolls step-by-step cooking instructions across the display, in a choice of English, Spanish, or French.

One-Touch Sensor Cook and Reheat

The Sensor adjusts power levels and calculates cooking and reheating times automatically for various food types.

Control Panel

The easy-to-use standard flat panel keypad makes it possible to operate the microwave easily.

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 until ready to serve.

Elegant Design with 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.


SpecificationsExpand All

  • More Details
    • MODEL NO.
    • Capacity
    • Exterior Dimensions HxWxD"
    • POWER
    • Microwave Type
    • Microwave (Technology)
    • Power Consumption
    • Power Supply
    • Cooking Power
    • DESIGN
    • Color (Material)
    • Face of Door/Base
    • Cabinet Body
    • Dial / Button
    • Interior Color (Material)
    • Interior Light
    • Panel Design
    • Language
    • Display Type
    • Display Backlight Color
    • Cooking Time
    • Kitchen Timer
    • Standing Time
    • Delay Start
    • Clock
    • Child Lock
    • Sensor
    • Turbo Defrost
    • Popcorn
    • Keep Warm
    • Quick 30s / Quick Min
    • More/Less
    • Auto Reheat
    • Number of Auto Cook
    • Turntable Size
    • Operating Instructions
    • Trim Kit 30"
    • Trim Kit 27"
    • Turntable
    • Outside HxWxD ( " )
    • Interior HxWxD ( " )
    • Stand-by Regulation
    • Safety Standard




Rated 2.4 out of 5 by 16 reviewers.
Rated 1 out of 5 by JUNK,Do not purchase I thought I would splurge and pay a little more for a nice looking microwave because I thought it would last for a while. WRONG. Do not spend your money on this microwave. I see someone else on here had the same issue with the door that I did. It started small, not opening correctly and then got to where I had to slam it shut several times just to get it to stay shut. I finally thought , I will fix this myself, but after purchasing a special tool to get the screws out, I found out that the piece( or pieces) for the door closure were all made of cheap plastic. The closure was loose and moving all over the place so I tried to tighten the screws that held it but part of it was not put together right. After trying for numerous times, the plastic pieces started breaking off. I wasn't rough or anything on the closure. Piece of JUNK!!! So now it sits on my curb waiting on the trash man to pick it up. I did not purchase another panasonic brand and may never again. I only had the microwave about 8 months, seems like that is a magic # from other posts on here. Very disappointed, money's tight for me and this microwave did not last at all. August 17, 2015
Rated 3 out of 5 No Light and Constant Beep Looks very stylish, easy features to use, reasonable cost. Problem is the light only works when in use. Should be pretty easy to have light on like a fridge door. Other big problem is the beeping feature can not be turned off. I will return this item and pull my 20 yr old panasonic back out since the light is on and able to turn beeping off. These are easy and obvious fixes. Otherwise they should but for Day Use Only on box. July 31, 2015
Rated 4 out of 5 Light The interior light needs to stay on when the door is opened July 26, 2015
Rated 1 out of 5 by end of the line with Panasonic for me This is the third one of this model I bought - they have gotten progressively worse. this one died after 8 months. The Extra warranty is no good, because it is still under Panasonic warranty. Panasonic offers that if I trek 50 miles (x 4 for drop off / pick up!) to the nearest service center (or box it up and ship it?!!) they will try to fix it. Forget it, that is the end of the line with Panasonic for me, after 30+ years. June 11, 2015
Rated 1 out of 5 by Wish I had of bought another brand This oven is TOO loud. The light comes on only when in use. Burns most of my food items May 21, 2015
Rated 1 out of 5 Unit stopped working after just 8 months Very poor quality. The microwave totally stopped working after just 8 months. I notice several other reviewers with the same unfortunate experience. I still own another Panasonic microwave bought about 20 years ago. It still works. The Panasonic name does NOT stand for quality anymore. April 30, 2015
Rated 5 out of 5 Awesome Microwave The quality of this microwave is amazing. It is very shiny and looks very nice on my kitchen. I love the fact that is not to noisy when you open it or close it, as compared to the previous one I had. I love it. April 22, 2015
Rated 2 out of 5 by Disappointed I was replacing a mid 1990's Panasonic model that still works. Interior light is on only when oven runs: why? I can not see what I am trying to put in or take out of oven! This is causing me to return it, I can still use my old one that I can see what I'm doing in (how would one safely stir something in this oven with no interior light?) March 29, 2015
  • 2015-10-03T07:18:58.565-05:00
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