MUNBYN RealWriter 402B thermal label printer in white

Open thermal label printer with highlighted jam-resistant tech and less than 0.01% jam rate.

MUNBYN 402B thermal shipping label printer

Thermal label printer with auto size recognition

Thermal label printer with shipping labels

MUNBYN 402B wireless thermal shipping printer

Thermal label printer for printing shipping labels

Product highlights

Bluetooth

Bluetooth / USB

High speed

one 4×6 label per second

Standard Resolution

203 DPI Clear Printing

Business Ready

Essential for Small Business

MUNBYN RW402B Bluetooth Thermal Label Printer

Wireless Bluetooth Printing 203 DPI Clear Printing Auto Size Detection Universal Platform Compatible

Reliable, budget-friendly printing elivers consistent, high-quality shipping labels for all major US e-commerce platforms and carriers.

Lowest Price! Today Only on Official Store

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$89.99

Saved $80.00

Original Price

~~$169.99~~

Color: White

White $89.99 $169.99
Black $89.99 $169.99

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Print wirelessly. Any device, any OS.

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Product highlights

Bluetooth

Bluetooth / USB

High speed

one 4×6 label per second

Standard Resolution

203 DPI Clear Printing

Business Ready

Essential for Small Business

Key Features

[Trust & Support: Double the Assurance]
Every MUNBYN RW402B thermal shipping label printer comes backed by a 2-year warranty and 24 months of dedicated technical support — twice the coverage offered by most competitors. Broad compatibility with all major shipping carriers and e-commerce platforms, including FedEx, UPS, USPS, Amazon, Shopify, Etsy, and eBay, means your label printing workflow stays connected and uninterrupted from day one.

[Exceptional Durability: Built to Last]
This shipping label printer is engineered for long-term, high-volume reliability. With a rated lifespan of up to 970,000 labels — six times longer than standard models — the RW402B is the dependable workhorse your business can count on day after day, shipment after shipment, without costly replacements or unexpected downtime.

[Smart Automation: Time-Saving & Effortless]
Forget fiddling with settings every time you switch label sizes. The RW402B's intelligent Auto Size Detection automatically calibrates to any direct thermal label between 1.57" and 4.3" wide, so you can load and print in seconds. Less manual adjustment means less wasted paper and more time spent on what actually matters — running your business.

[Superior Reliability: Jam-Free Printing]
Jammed labels cost you time, paper, and patience. MUNBYN's patented MicroJam Technology reduces the jam rate to under 0.01%, delivering a consistently smooth, uninterrupted printing experience, whether you're running 10 labels or 10,000. Fewer errors, less waste, and a shipping label printer you can rely on during your busiest fulfillment days.

[Creative Freedom: Your Brand's Creative Engine]
The MUNBYN RW402B goes far beyond printing postage. Its advanced printing algorithm renders barcodes, fine text, and complex graphics with crisp, scan-ready precision. Pair it with the free MUNBYN Print app — featuring 3,500+ design elements, 2,000+ templates, and 80+ fonts — to create custom shipping labels, branded product stickers, home organization labels, and more. With PDF/TXT import and built-in OCR text recognition, designing and printing professional labels from any device has never been easier.

Free Shipping on Orders Over $79*

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2-Year Warranty & Lifetime Support

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MUNBYN RW402B Bluetooth Thermal Label Printer

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$89.99$169.99 Saved $80.00

4 interest-free payments of $22.50

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Print Anything, Anywhere

Your ideas, your space — print wherever inspiration strikes.

Ink-Free, Worry-Free

Zero ink. Time, money, and planet-saving.

Fast to Print, Easy to Keep Going

High speed:150 mm/s = one 4×6 label per second.

MUNBYN RW402B Bluetooth Thermal Label Printer

$89.99

Product details

Basic Introduction

SKU

- MU-RW402B-WH-US-2

Moel Type

- 402B

Resolution

- 203 DPI

Printing Speed

- 150 mm/s

Weight

- 0.631 Kg

Product Dimensions

- 200x80x90mm(L*W*H)

Compatibility

Connectivity

Bluetooth: iOS, Android, Windows, Mac
USB: Windows, Mac OS

Compatible Label Sizes

- 40-108 mm

Special Feature

- Portable

Compatible Devices

- Laptops, PC, Smartphones, Tablets

Power Adapter

- 24V/2.5A

Others

Usage Scenarios

- Warehouses
- Retail
- Offices
- Business
- Home

Service Warranty

- 2-Year Warranty
- Technical Support

Included in the Box

Printer
USB Cable
Adapter
Power Adapter
User Manual
Quick Tips
Labels

Download our app

High-End Labels in Minutes
Designing custom packaging has never been this simple. Using the MUNBYN app and our versatile DIY Labels, you have a library of 3,000+ design assets and templates at your command.

Craft bespoke logos and promotional stickers that perfectly capture your brand’s personality—all while keeping your budget in check.

App Store

Download Now

Google Play

Download Now

Online Editor

Create Now

User Manual

Download Now

Setup Guides & Tutorials

Video

Watch Tutorials

Step-by-step tutorials and troubleshooting videos.

WATCH TUTORIALS

Guide

Read Full Guide

Find FAQs, setup instructions, and driver downloads.

Read Full Guide

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Women-Led Practicality for Budget-Smart Businesses

The RW402B reflects MUNBYN’s women-led focus on creating business tools that are easy to use, dependable, and cost-conscious. Built for small shops, home offices, warehouses, and retail counters, this thermal shipping label printer helps sellers print clear shipping labels and everyday business labels without overspending on equipment or supplies.

Save Money With Professional Thermal Printing

With Bluetooth and USB connectivity, the MUNBYN RW402B lets you print from smartphones, tablets, laptops, and desktop computers across iOS, Android, Windows, and Mac. Whether you are packing orders at home, organizing stock in a warehouse, or printing labels in a retail workspace, this portable thermal shipping label printer keeps your setup simple and flexible.

Auto-Detecting Thermal Printing

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Load Labels Faster. Print Longer. Waste Less.

Load any postage label size (4×6 shipping labels, 3×2" stickers, 2×1" barcodes, or round labels)—RW402B's Auto Size Detection automatically adjusts in seconds. Process orders 3x faster with zero calibration needed.

Your all-in-one tool for major marketplaces and carriers, including but not limited to

Designed to print more than 980,000* labels in shipping labels

How People Use MUNBYN

Print life and label quantity estimates are based on laboratory calculations (150 KM printhead life × 4×6" label length). Actual performance may vary due to print frequency, label material, operating environment, and maintenance conditions.

Shipping Label

Custom Labels

Barcode Labels

Fragile Labels

Branded Labels

Stickers for Daycare/School

FAQs

Please read our FAQs page to find out more.

What is the MUNBYN RW402B designed for?

The MUNBYN RW402B is a compact 203 DPI direct thermal printer for 4 x 6 shipping labels, return labels, barcodes, inventory tags, and product labels. It is suited to ecommerce sellers, warehouses, retail operations, offices, and home businesses that need Bluetooth and USB flexibility.

How does the MUNBYN RW402B connect to phones and computers?

The RW402B supports Bluetooth connections with iOS, Android, Windows, and Mac devices. Windows and Mac computers can also connect by USB. Mobile users can prepare and print labels through the MUNBYN Print app, while computer users should match the file size to the loaded labels.

Which carriers and ecommerce platforms work with the RW402B?

The RW402B can print shipping labels created by FedEx, UPS, USPS, Amazon, Shopify, Etsy, eBay, and other major platforms. Download or open the label, select the RW402B, and verify the page size and orientation before printing.

What label sizes can the MUNBYN RW402B print?

The RW402B supports direct thermal labels from 40 to 108 mm wide, including standard 4 x 6 shipping labels and narrower address, barcode, inventory, and product labels. Its automatic size detection helps calibrate the media after loading, but the document must still use the correct dimensions.

Does the RW402B need ink, toner, or cartridges?

No. The RW402B uses direct thermal printing and requires no ink, toner, or ribbon cartridges. Use compatible direct thermal labels and keep unused media away from excessive heat, moisture, and sunlight for consistent results.

What print quality and speed does the RW402B offer?

The RW402B prints at 203 DPI with a listed speed of up to 150 mm/s. It is designed for clear addresses, shipping text, and scannable barcodes in routine fulfillment. Label quality, print density, connectivity, and document complexity can influence actual output.

How does automatic size detection work on the RW402B?

Automatic size detection helps the RW402B identify and calibrate direct thermal labels between 40 and 108 mm wide. Load the labels straight, adjust the guides, and calibrate after changing media. Select the matching size in the print settings so the content is not cropped or scaled.

What should I check if the RW402B prints a blank or misaligned label?

Make sure the thermal side faces the print head, reload the labels straight, and recalibrate the printer. Confirm the file uses the exact label size and disable scaling that changes the layout. Print one test label before a batch. The RW402B includes a two-year warranty and technical support.

Free shipping and returns

North America

Europe

Oceania

MUNBYN RW402B Bluetooth Thermal Label Printer

Product details

SKU

Moel Type

Resolution

Printing Speed

Weight

Product Dimensions

Connectivity

Compatible Label Sizes

Special Feature

Compatible Devices

Power Adapter

Usage Scenarios

Service Warranty

Download our app

App Store

Google Play

Online Editor

User Manual

Setup Guides & Tutorials

Watch Tutorials

Read Full Guide

How do I connect the printer to the “Munbyn Print”App

How to connect RW402B device to Windows via Bluetooth

Introduction of the status of power indicator

Feeder Button instruction for RW402B

Women-Led Practicality for Budget-Smart Businesses

Save Money With Professional Thermal Printing

Auto-Detecting Thermal Printing

Load Labels Faster. Print Longer. Waste Less.

Your all-in-one tool for major marketplaces and carriers, including but not limited to

How People Use MUNBYN

FAQs

What is the MUNBYN RW402B designed for?

How does the MUNBYN RW402B connect to phones and computers?

Which carriers and ecommerce platforms work with the RW402B?

What label sizes can the MUNBYN RW402B print?

Does the RW402B need ink, toner, or cartridges?

What print quality and speed does the RW402B offer?

How does automatic size detection work on the RW402B?

What should I check if the RW402B prints a blank or misaligned label?

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