# NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi

The NIIMBOT B21Pro is a Bluetooth thermal label printer for phone-designed labels, with a listing-claimed 300 dpi resolution and a 50 mm maximum label width. It suits product, address and organisation labels, but the listing says it is not for shipping labels.

- [Original product page](https://bargainpostbox.co.uk/product/niimbot-b21pro-bluetooth-thermal-label-printer)
- [View offer](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: NIIMBOT
- Model: B21Pro
- Category: Computers > Printers / 3D & Scanners > Printers / 3D & Multifunction
- Price: 67.99 GBP
- Previous price: 79.99 GBP
- Discount: 15%
- Price checked: 2026-11-12T15:02:23.964Z
- Rating: 4.4 / 5
- Reviews: 317

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Prints thermal labels without ink, according to the listing.
- The companion app is described as supporting text, images, QR codes and barcodes.
- The listing claims up to four hours of continuous working time after 1.5 hours of charging.
- Listed for iOS and Android phones, with PC compatibility requiring a downloaded driver.

## Pros

- The stated 20–50 mm media range covers a variety of compact product and organisation labels.
- One pack of 50x30mm labels, stated as 230pcs/Roll, is listed as included.
- Bluetooth printing and an app-based design workflow avoid requiring a separate label-design computer for phone users.

## Cons

- The listing explicitly says it is not for shipping labels.
- Tablet use is not supported and is specifically not recommended in the listing.

## Specifications

### Identity
- Brand: NIIMBOT
- Model: B21Pro
### Printing
- Technology: Thermal
- Resolution: 300 x 300
- Listed maximum print speed: 50 ppm
- Output type: Colour
- Ink colour: Red, black
- Print media: Labels
- Paper size: 20-50 Millimetres
- Maximum supported paper size: 2 inches
- Duplex: Simplex
- Additional printer functions: Print Only
- Number of trays: 1
- Maximum sheet capacity: 10
### Connectivity and controls
- Wireless connection listed: Bluetooth
- Hardware interface: USB Type C
### Dimensions and installation
- Dimensions listed: 13D x 9.4W x 6.1H centimetres
- Weight listed: 321 Grams
### Power
- Power consumption: 10 Watts

## Before you buy

- Listing details are inconsistent about colour capability and output: it describes black-and-red dual-colour printing and lists red and black ink colours, but also lists colour output and a colour printer resolution. The listed 50 ppm speed and 10-sheet capacity appear in printer fields, but the listing does not explain how they apply to label printing. Check the selected listing and media requirements if these points matter. The listing claims up to four hours of continuous use after a 1.5-hour charge, but gives no usage conditions for that estimate.

## In the box

- Labels (Included): The contents list names labels. The feature description specifies one pack of 50x30mm labels, stated as 230pcs/Roll.

## A good fit for

- Home, office or small-business users making product, ingredient, price, clothing or address labels.
- Phone users who want to lay out text, images, QR codes or barcodes in an app.
- Buyers who need label widths between 20 and 50 mm and do not need shipping labels.

## Less suited to

- Anyone needing conventional shipping labels.
- Buyers who require tablet compatibility or confirmed photo reproduction quality.

## Customer feedback

Customer feedback highlights positive impressions of print quality and functionality, while image quality and label recognition receive mixed or negative comments, including reports of poor picture reproduction and labels not being recognised. This matters most if you plan to print images or rely on automatic media recognition. The listing claims grayscale image printing and automatic RFID label recognition, but those specifications do not establish consistent results. The overall rating distribution is mostly five-star, with a smaller spread of lower ratings, but ratings alone do not explain individual experiences.
- Positive themes: Customers describe print quality and functionality positively.
- Negative themes: Image quality receives negative feedback, including a report of poor picture reproduction.
- Mixed feedback: Label recognition receives mixed feedback, with reports of labels not being recognised.

## Frequently asked questions

### What devices can be used with the B21Pro?
The listing says it works with iOS and Android phones and can work with a PC after downloading a NIIMBOT driver. It says the printer is not compatible with tablets and does not recommend tablet use.
### What label sizes does it support?
The listing describes a width range of 20–50 mm and also gives a maximum supported paper size of 2 inches. It says the printer is not for shipping labels.
### Does it print in colour?
The listing is inconsistent. It claims black-and-red dual-colour printing and lists red and black ink colours, while also labelling the output as colour. Confirm the required media and output capability before buying.
### Are labels included?
The contents field lists labels, and a feature description specifies one pack of 50x30mm labels, stated as 230pcs/Roll.

## Alternative options

- [ORGSTA S002 Label Maker with Tape Bluetooth Portable Printer Thermal \| 300 Dpi Mini Sticker Handheld Labelling Machine for iPhone & Android](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [NIIMBOT B1 Label Maker Machine, 2 Inch Bluetooth Sticker Printer \| Easy-to-Use Multi-Device Compatible \(iOS/Android/PC\), Includes 1 Roll Custom Stickers for Retail, Office & Home](https://bargainpostbox.co.uk/visit/niimbot-b1-bluetooth-thermal-label-printer)
- [NIIMBOT B1 2-Inch Label Maker, Portable Thermal Printer for Small Business \| Bluetooth Connection, Waterproof Labels, Personalised Stickers, Prints Barcodes, Logos, QR. Ideal For Retail/Office/Kitchen](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [NIIMBOT D110 Mini Label Maker Machine, Bluetooth Thermal Label Printer \| Inkless Sticker Printer, Custom Name Stickers with App Waterproof Labels for Kitchen, Home, Office, School Organization](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [ORGSTA S001 Label Maker with Tape Bluetooth Portable Printer Thermal \| 2000 mAh Mini Sticker Handheld Labelling Machine for iPhone & Android](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [JADENS 4x6 Bluetooth Thermal Label Printer with Built-in Label Holder \| Inkless Printing, Wireless Printing, Cost-Effective Shipping Label Printer for Small Business, & Home Offices, Fast Setup](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [SUPVAN T50M Pro Bluetooth Label Maker Machine with Tape, Black \| Wide Waterproof Label, App with 30 Fonts and 660+ Icons, Inkless, Personalised Stickers for School, Home, Small Business](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [4x6 Thermal Label Printer with Built-in Label Holder, Bluetooth & USB \| Inkless Printing, Fast Setup, Wireless Printing, Cost-Effective Shipping Solution for Small Business, & Home Offices](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [NIIMBOT D110 Label Maker for Custom Waterproof Name Stickers, with 1 Roll \| Portable Thermal Sticker Printer, Easy to Use with Multiple Templates via App for School, Home and Kitchen Organisation](https://bargainpostbox.co.uk/visit/niimbot-d110m-bluetooth-thermal-label-maker)
- [ORGSTA Label Rolls for S001 Portable Printer \| Stickers Self Adhesive Sticky Thermal Printer Paper White Continues 15 x7M,3 Rolls](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [ORGBRO X3 Sticker Printer Mini Bluetooth Thermal Portable Label Maker \| Sticker Maker with 1 Roll Thermal Paper, Suitable for Study Notes Photos, 300DPI Compatible with Phone](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)
- [SUPVAN T50M Pro Bluetooth Label Maker Machine with 3 Tapes, Set 2 \| Wide Waterproof Label, App with 30 Fonts and 660+ Icons, Inkless, Personalised Stickers for School, Home, Small Business](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)

## Add-ons

- [NIIMBOT Grayscale Label Roll for B1 Pro/B2 Pro/B21 Pro Label Maker \| 54x84mm 95Pcs/Roll Self-Adhesive Thermal Sticker Labels for Photos, Journals, Scrapbooks, Planners & Custom Logo Design](https://bargainpostbox.co.uk/visit/niimbot-b21pro-bluetooth-thermal-label-printer)

## Images

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 1](https://bargainpostbox.co.uk/i/yZ8KGZIIsHwtcgt1nouVyunBZbz2XOnNUFKWNYI10yvyaSAGcR1FhriXScTP3KyX0F1ysXknUetkA862TLUFRoW9ejwNMPax6NTmXcAp7kLwRdUzBvrCSjfv.jpg)

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 2](https://bargainpostbox.co.uk/i/fvnhD166avalVSHbUD4zgbX9nrVccITmJmz7dWDIdnZSGerf8ibwM_x93TJQxb0Kg79KDTNARlkagiAgrsSktOUCyF4DLR1b5WXBNUo5dU5tE8ndYo9VopOw.jpg)

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 3](https://bargainpostbox.co.uk/i/xiOdevGO3vxm06PnyCoJYJSFobrA0mxdS-We57j6qMbMmkOEhbUQXKCSH7KFD9c2ZabpejYprjmSyKuX0fltWONvt3Inv0-7PAwG9y1M-vohCkeh5agLIVkj.jpg)

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 4](https://bargainpostbox.co.uk/i/N05lW-PL8O8zrnPl3XTKfj3dSAxPh5_XUtAZ7LyjBNxeO0j6Tx_uixIw2aa0cZKtp6hudntY3FDDIIty8Hyfs8w_8pSygrTfspyAnRHup0NcgazaFOU73Yzh.jpg)

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 5](https://bargainpostbox.co.uk/i/Tf5OtZoUAW-8NteKuGDff7uYL5YYSf-7uL3ePstC3o08DfvivyoLcI_dSfEV4gD8XOOrhIlWnbr5AXidCYhh9kovfrWOQM9YK74Ol8X9DiB05w9IQQEcTRBq.jpg)

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 6](https://bargainpostbox.co.uk/i/a_6XSHtN-LMK3M2QV1fgLbrnGSgQyIbKOgGvVWgrz5ds-CoaHrjFLjm9qToGZNV2JJkkvQB3OxTKDiOHn9i48JoiwxTAO_ID2_Ur5hsmCSCa7TWNzL3qA46q.jpg)

![NIIMBOT B21Pro Bluetooth Thermal Label Printer, 300 dpi — 7](https://bargainpostbox.co.uk/i/FQBEwXwjZtlLF8iP4QvF3j56ToKeSGYwYnsZek1ntClsLMVVbxWnou3nyigChNWlqoUvO48Lfpm9gDc4efIhtgAjj7Dt-Xmh608lUx755KKSrooqkbAb5-_w.jpg)