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Product guide

vretti 420B 4×6 Thermal Label Printer

The vretti 420B is a monochrome thermal label printer listed with Bluetooth, USB connectivity and an internal holder for up to 500 labels. It is aimed at shipping-label batches rather than everyday document printing, with a claimed 203 dpi resolution and a compact desktop footprint.

At a glance

Internal holder is claimed to accommodate a 500-label roll, reducing the need to replenish labels during a batch.
The listing describes Bluetooth printing and USB as a wired connection option.
Direct thermal printing uses heat rather than ink or toner, according to the listing.
The seller claims print speeds up to 6ips (152mm/s).
This is a label-only printer, not an A4 document printer.

Price

£74.98Save 21%

Reference price: ~~£94.99~~

Price checked: 12 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Self Adhesive Address Labels, Blank Direct Thermal Label Stickers by Binswloo, 60mm x 30mm, Roll of 800

£8.99

Deco Fluer Self-Adhesive Labels 4"x6" Ideal for Thermal Printer [Pack of 1-500 Label]

£5.99

Pros and cons

Pros

Bluetooth and USB connectivity give a choice of wireless or wired printing.
An internal label holder is claimed to hold a roll of up to 500 labels.
Thermal printing avoids the need for ink and toner supplies.

Cons

The printer is limited to monochrome label output and cannot serve as an A4 document printer.
Thermal output requires compatible thermal label stock.

Technical specifications

19 specifications

Identity
Brand	vretti
Model	420B

Printing
Printing technology	Thermal
Output	Monochrome
Print resolution	203 dpi
Media	Labels
Maximum supported paper size	4 x 6 inches
Maximum sheet capacity	500
Print function	Print Only
Duplex	Simplex

Connectivity and compatibility
Wireless connection listed	Bluetooth
Compatible devices	Laptops, PC, Smartphones, Tablets

Dimensions and installation
Dimensions listed	21.5D x 17.8W x 15.5H centimetres
Weight listed	1.35 Kilograms

Power and design
Power consumption listed	60 Watts
Colour	Black
Colour depth	1 bpp
Number of trays	1
Warranty type	Limited

What to know before buying

Listing details to confirm

The listing's technical details specify a maximum supported size of 4 x 6 inches, while feature text claims stock widths of 25.4-116mm and lengths up to 70 inches. It also variously claims a built-in 500-label holder and describes a small test roll in the box, so confirm compatible media dimensions and the selected listing's holder configuration before purchase. The claimed speed and supported printer languages are listing claims, not independently verified.

What’s in the box

Included

Small test label roll
Power adapter
Power cord
Setup guide
USB cable

Who is it for?

A good fit for

Small businesses and home sellers printing batches of shipping labels.
Buyers who want Bluetooth or USB connections for a dedicated label printer.
Users seeking monochrome thermal labels without ink or toner.

Less suited to

Anyone needing A4 documents, colour printing or general-purpose office printing.
Buyers who require confirmed compatibility with a specific label format or shipping workflow without checking the listing details.

vretti 420B 4×6 Thermal Label Printer · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 873 ratings

5 stars74%74%
4 stars8%8%
3 stars4%4%
2 stars5%5%
1 star9%9%

Customer feedback commonly describes straightforward setup, clear output and quick printing, with some users reporting that it works within minutes of unpacking. The reported experience with 4×6 label printing is mixed, which matters for a model whose listed maximum supported paper size is 4 x 6 inches. These comments are customer perceptions, not a guarantee of results with every label stock or setup.

Positive themes

Customer feedback highlights easy setup and clear, fast label output.

Mixed feedback

Feedback on label printing is mixed, including reports of issues with 4×6 labels.

Frequently asked questions

Can the vretti 420B print A4 documents?

No. The listing describes it as a labels-only printer and says it cannot print A4.

What connections are listed?

Bluetooth is the stated wireless connection. The feature text also claims USB 2.0 wired connectivity.

Does it need ink or toner?

The listing describes direct thermal printing, which uses heat and does not require ink or toner.

What label sizes does it support?

The technical details list a maximum supported size of 4 x 6 inches, while feature text claims widths from 25.4-116mm and lengths up to 70 inches. Check the selected listing and media compatibility before buying.