Panasonic

Panasonic NN-SB438S 0.9 Cu. Ft. Compact Microwave

4.2 (1630 reviews)

Compact 900W countertop microwave with 7 preset menus, a popcorn button with 3 levels, and a Keep Warm function.

$149.95*
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*Price sourced from Amazon.com. Last updated:Jul 20, 2026.Price and availability are subject to change.

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Overview

The Panasonic NN-SB438S is a 0.9 cubic foot countertop microwave designed to deliver solid performance without occupying excessive counter space. With 900 watts of cooking power, it handles everyday tasks like reheating leftovers, cooking frozen meals, and warming beverages with speed and consistency. The smart compact design minimizes the external footprint by devoting more of the unit's size to interior capacity, so you get a usable cooking chamber without the bulk of a full-size model.

The control panel keeps things simple with touchpad operation, 7 preset Auto Cook menu items, and a Quick 30-second start button for fast reheating. The dedicated Popcorn button goes a step further with 3 power level options that adjust based on bag size, reducing the guesswork that often leads to burnt or unpopped kernels. A delay start timer lets you schedule cooking in advance, while the Keep Warm feature maintains soups, sauces, vegetables, and other dishes at serving temperature until you're ready. The child safety lock adds peace of mind for families. Finished in Black Stainless Steel, the NN-SB438S fits visually into modern kitchen setups while delivering the reliable cooking performance Panasonic is known for.

Key Features

Microwave Power and Innovation: 900 Watts of High Power for fast, even cooking and delicious results

Simple Microwave Controls: 7 Preset Auto Cook Menu Items; Delay Start and Timer; More/Less Control; Child Safety Lock; Quick 30sec and Popcorn Button with 3 cooking levels

Minimum Countertop Footprint: Smart, compact microwave oven occupies less space for electronics and more for interior capacity

Microwave Popcorn: Choose from 3 power level options, depending on the size of the microwave popcorn bag, for perfect popping every time

Keep Warm: Keeps foods like vegetables, soups, hors d’oeuvres, gravies, sauces and desserts warm and delicious until they’re ready to serve

Panasonic kitchen appliances reflect Japan’s relentless innovation and high-tech heritage, delivering not only smarter, faster meals but also a seamless, elevated cooking experience you can taste in every bite.

Specifications

Brand
Panasonic
Model
NN-SB438S
Capacity
0.9 Cubic Feet
Wattage
900 Watts
Installation Type
Countertop
Color/Finish
Black Stainless Steel
Controls
Touchpad
Preset Menus
7 Auto Cook Menu Items
Special Features
Quick 30sec, Popcorn Button (3 Levels), Keep Warm, Delay Start, Child Safety Lock

Frequently Asked Questions

The NN-SB438S offers 0.9 cubic feet of interior capacity, designed to maximize cooking space while keeping the external footprint compact.
Yes, a child safety lock is built in to prevent unsupervised operation.
The microwave includes 7 Auto Cook menu items, a Quick 30-second button, and a dedicated Popcorn button with 3 power level options based on bag size.
The Keep Warm function maintains foods like soups, vegetables, sauces, and desserts at a ready-to-serve temperature until you're prepared to eat.
The NN-SB438S comes in a Black Stainless Steel finish.