US
Panasonic

Panasonic Countertop Microwave Oven 1.3 Cu Ft

  • Capacity: 1.3 cu ft
  • Wattage: 1100 watts
  • Turntable Diameter: 12.4 inches
  • Heating Method: Electric

Last refreshed Jun 13, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A 1100 watt sensor microwave with a useful child lock and popcorn presets, let down for some buyers by a missing interior light and one report of the control failing to stop heating.

As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.

ASIN: B01DPZD2GUModel: NN-SU656BCategory: Countertop Microwave Ovens

More from this brandAll Panasonic countertop microwave ovens

Overview

The Panasonic NN-SU656B is a 1.3 cubic foot, 1100 watt countertop microwave with a Genius Sensor that reads steam output to set cooking time automatically. It adds a child safety lock, a quick 30 second button, and a popcorn setting with three power levels.

Buyer feedback flags two design changes from earlier Panasonic models worth knowing before purchase: this version drops the interior light and the front clock times out to save power, and one buyer found the unit about 1/8 inch taller than a prior version, which kept it from fitting an existing cabinet cutout.

  • 1100 watts, 1.3 cu ft capacity
  • Genius Sensor auto cook adjustment
  • 12.4 inch turntable
  • Child safety lock plus delay start

Who it's for

This fits a household replacing an aging microwave that wants sensor reheating and a child lock without paying for a built in unit. Anyone who relies on an always lit interior light or a clock that stays visible should check current unit dimensions against their cabinet space first.

Pros and cons

Pros
  • 1100 watts with Genius Sensor auto adjust
  • Child safety lock included
  • Quick 30 second and popcorn buttons
Cons
  • No interior light on this version
  • Clock display times out
  • One report of overrun past set time

Performance notes

The touch buttons are push buttons rather than fully touch sensitive, which one long time owner found harder to use precisely than her prior model's tactile buttons, and a separate review reported the unit continuing to microwave past the set time after about 15 months of use, worth confirming with Panasonic support if it occurs.

Specifications

BrandPanasonic
ModelNN-SU656B
Dimensions & fit
Turntable Diameter12.4 inches
Item Weight35.3 poundshigher than 74% of 32 countertop microwave ovens
Capacity & performance
Capacity1.3 cu fthigher than 73% of 94 countertop microwave ovens
Heating MethodElectric
Power & efficiency
Wattage1100 wattshigher than 63% of 79 countertop microwave ovens
Number of Power Levels3
Power Consumption1100 wattshigher than 57% of 64 countertop microwave ovens
Energy Consumption1100 wattshigher than 55% of 67 countertop microwave ovens
Voltage120 volts
Construction & materials
Inner MaterialStainless Steel
Material TypeStainless Steel
ColorBlack
Compatibility & installation
Installation TypeCountertop
Included components
Unit Count1
Included ComponentsMicrowave
Warranty & support
Warranty Description1 year
Other details
Number of Programs7
Control TypePush Button
Timer FunctionTimer Function Available
Frequency2450 MHz
Recommended Uses For ProductVegetable
Additional FeaturesManual
Item Type NameMicrowave Oven

Closest rivals on specs

Compare all side by side

Frequently asked questions

How many watts does the Panasonic NN-SU656B put out?

It runs at 1100 watts in a 1.3 cubic foot capacity.

Does this microwave have a child safety lock?

Yes, a child safety lock is built in, along with delay start and a countdown timer.