MUNBYN RW403B Pink Bluetooth 4×6 Thermal Label Printer

The MUNBYN RW403B is a pink thermal label printer with Bluetooth and USB connectivity for printing monochrome labels. Its 4 × 6-inch format and listed mobile and computer compatibility suit postage and other label tasks, while customer feedback includes reports of inconsistent functionality.

At a glance

Thermal monochrome printing avoids ink cartridges, according to the listed printing technology and output type.
Bluetooth is listed for Windows, macOS, ChromeOS, Android and iOS. USB is listed for Windows and macOS.
The supplied contents list includes 10 sheets of white labels, plus a USB cable and power accessories.

Price

£69.97Save 26%

Reference price: ~~£94.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Bluetooth support across listed desktop and mobile operating systems gives several connection options.
A compact listed footprint and 1.3 kg weight may suit a small home or work area.
The explicit contents list includes starter label sheets.

Technical specifications

14 specifications

Identity
Brand	MUNBYN
Model	RW403B
Colour	Pink
Printing technology	Thermal
Output	Monochrome
Print media	Labels
Maximum supported paper size	4 x 6 inch
Print resolution, black and white	203 dots_per_inch

Connectivity and controls
Wireless connection listed	Bluetooth for Windows, macOS, ChromeOS, Android, and iOS; USB connection for Windows and macOS, USB
Control methods listed	Bluetooth for Windows, macOS, ChromeOS, Android and iOS; USB connection for Windows and macOS
Hardware interface	USB
USB ports	1

Dimensions and installation
Dimensions listed	9.1D x 18.6W x 9.2H centimetres
Weight listed	1.3 Kilograms

What to know before buying

The listing claims 4 × 6-inch label printing, but its paper-size field says "4 x 6 inch" and does not clarify supported label formats beyond that. Bluetooth and USB operating-system support is stated, but specific setup requirements are not detailed. The stated print-speed figure of 72 ppm is not accompanied by a measurement method or usage conditions, so it should not be treated as a guaranteed real-world label rate.

What’s in the box

Included

RW403B label printer
User manual
1 quick start guide
Power adapter
1 power cord
1 USB-C to USB-A adapter
1 USB cable
10 sheets of white labels

Who is it for?

A good fit for

Small businesses or home sellers seeking a compact printer for postage labels.
Buyers who want Bluetooth printing from a supported phone, tablet or computer, or USB from Windows or macOS.

Less suited to

Anyone needing colour printing or a multifunction printer.
Buyers requiring a confirmed real-world print rate or confidence that every unit will function consistently.

MUNBYN RW403B Pink Bluetooth 4×6 Thermal Label Printer · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 584 ratings

5 stars75%75%
4 stars6%6%
3 stars3%3%
2 stars4%4%
1 star12%12%

Customer feedback highlights quick printing, easy setup, compact size and Bluetooth connectivity, with positive comments about postage-label use. Functionality feedback is mixed, including reports that the printer works well and reports that it will not print. That makes the setup and connectivity praise relevant, but buyers who depend on uninterrupted label printing should weigh the reported reliability concerns. The listed 4 × 6-inch thermal format supports the intended label use, but does not settle those customer-reported differences.