vretti PB821 Portable Bluetooth Thermal Printer

Bluetooth: The vretti PB821 is a portable monochrome thermal printer designed for wireless printing from phones and tablets, with USB computer printing also described in the listing. It avoids ink and toner, but requires dedicated thermal paper, so factor paper availability and ongoing supply costs into your choice.

At a glance

Thermal printing uses no ink, toner or ribbon, according to the listing.
The XLifePro app is described as supporting text, PDF, Excel and Word files from phones or tablets.
The listing claims a 1500mAh rechargeable battery can print up to 223 A4 sheets per charge.
Thermal paper is required. The listing says ordinary copy paper is not supported.

Price

$68.84Save 10%

Reference price: ~~$76.49~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Ink-free printing avoids buying ink or toner and their associated printer upkeep.
Bluetooth printing through a mobile app is suited to occasional document printing away from a desk.
The listing specifies A4 and US Letter sizes, alongside smaller listed paper widths.

Cons

Thermal paper is a required consumable, so ordinary copy paper cannot be used.
Simplex printing means the listed configuration prints on one side at a time.

Technical specifications

20 specifications

Identity
Brand	vretti
Model	PB821

Connectivity and controls
Wireless connection listed	Bluetooth

Printing
Technology	Thermal
Output	Monochrome
Resolution	203DPI
Listed print speed	30 pages_per_minute
Functions	Print Only
Duplex	Simplex

Media and capacity
Maximum media size	8.5 x 11 inch
Listed paper sizes	2'', 3'', 4'', A4 and 8.5''x 11'' US Letter inches
Print media	Paper (plain)
Maximum sheet capacity	30

Power and physical details
Battery	1 9V batteries required.
Battery capacity	1500mAh
Dimensions	25.7D x 7W x 4.7H centimetres
Colour	Black

Compatibility and features
Compatible devices listed	Laptops, PC, Smartphones, Tablets
Special features	Lightweight, No INK, Portable
Supported file formats in app	text files (txt), PDF documents, Excel spreadsheets, and Word documents

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: dimensions are given as both “25.7D x 7W x 4.7H centimetres” and “25.7 x 7 x 4.7 cm; 900 g,” and the battery section says a 9V battery is required while the feature description claims a built-in rechargeable 1500mAh battery. The listing also labels the media “Paper (plain)” but says the printer only supports dedicated thermal paper, and describes USB computer printing without specifying the included cable or drive contents. Confirm the selected listing’s configuration and paper requirements before buying. Android connection instructions say location services must be enabled.

Who is it for?

A good fit for

People who want occasional mobile printing of documents without carrying ink or toner.
Students, travellers and home-office users who can source compatible thermal paper and mainly print single-sided.

Less suited to

Buyers who need colour printing, automatic duplexing or use of regular copy paper.
People who depend on a confirmed battery configuration or frequent USB computer printing without verifying those details first.

vretti PB821 Portable Bluetooth Thermal Printer · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 983 ratings

5 stars63%63%
4 stars18%18%
3 stars10%10%
2 stars3%3%
1 star6%6%

Customer feedback describes the printer as easy to use and practical, with positive impressions of print clarity from the app and its compact size. Connectivity experiences are mixed, which matters for a Bluetooth-focused printer. The listing also describes app-based document printing, but customer impressions do not establish consistent connection performance for every device.

Positive themes

Customer feedback highlights ease of use, practical operation, clear app output and compact size.

Mixed feedback

Customer feedback reports differing experiences with connectivity.

Frequently asked questions

Does the PB821 use regular copy paper?

No. The listing says it requires dedicated thermal paper and does not support regular copy paper.

Can I print from a phone or tablet?

The listing describes Bluetooth printing through the XLifePro app, which supports text, PDF, Excel and Word files. It says Android users need location services enabled to connect.

Can it print without being plugged in?

The listing claims a rechargeable 1500mAh battery with printing capacity up to 223 A4 sheets, but another details field says a 9V battery is required. Confirm the battery configuration for the selected listing.

Does the PB821 print on both sides?

No. The listed duplex mode is Simplex, meaning one-sided printing.