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Compact white rectangular thermal label printer with rounded edges and Bluetooth connectivity

NIIMBOT B21 Label Printer Thermal Bluetooth 50x70mm 64MB

SKU CH-69GB-K2W4B MPN B21

Thermal label printer with Bluetooth, 64 MB flash memory and 50×70 mm print size for mobile and PC labelling

  • Memory size64 MB Flash
  • Interface typeBluetooth
  • Printing methodThermal
  • Cutter typePortable, 1x 50 × 30 mm Roll of white labels
  • RFID encodingPrint only, Thermal
  • Ribbon typeThermal
  • Thermal printing needs no ink or ribbons
  • Bluetooth connects to Android and iOS devices
  • 64 MB flash stores templates and fonts
  • Rechargeable 1500 mAh battery lasts two weeks
  • Compact 5 × 8 × 13 cm design weighs 0.7 lb

Compact Bluetooth Label Printer

The NIIMBOT B21 is a thermal label printer that connects via Bluetooth to Android and iOS devices. It prints on media up to 50 x 70 millimetres and includes a built-in cutter plus a starter roll of 230 white labels measuring 50 x 30 millimetres. The unit weighs .66 pounds and measures 5 by 8 by 13 centimetres, making it easy to carry between workstations.

Sustained Operation on Battery Power

A 1500 mAh rechargeable battery provides up to two weeks of typical use after a four-hour charge, so the printer keeps running through a full shift without a cable. Thermal printing means there is no ribbon or ink to replace, and the 64 MB flash memory stores templates and fonts locally for fast repeat jobs. The companion app supplies over 30 fonts, 100 borders and 1500 symbols for on-the-fly label design.

Upgrade from Handwritten or Desktop Labels

This printer replaces handwritten tags and sheet-fed desktop labels for retailers, small businesses and home organisers who need quick, adhesive-backed stickers. The jump is worth it when you print batches daily and want automatic size recognition plus mobile app control. It does not support iPad or direct PC printing without the NIIMBOT desktop application, so buyers needing those connections should look elsewhere.

How it compares

Measured against everything we stock in Thermal Label & Receipt Printers, at today’s prices. Recalculated every night.

Price $65.99
Cheaper than about 60% of the 858 comparable items (median $84.99).
Memory size 64 MB Flash
Typical for this category: the median of 163 items is 0.06 GB.

Specifications

Product
Brand nameNIIMBOT
Product lineB21S, 21
Model nameB21
Part numberB21
Memory
Memory size64 MB Flash
Ports & slots
Interface typeBluetooth
Size & build
Product dimensions5 cm × 8 cm × 13 cm
Product weight0.7 lb (0.32 kg)
Compatibility
Accepted media sizes3 in × 5 in × 50 in
OS compatibilityAndroid
Mac compatibilityiOS
More details
Printing methodThermal
Cutter typePortable, 1x 50 × 30 mm Roll of white labels
RFID encodingPrint only, Thermal
Ribbon typeThermal
Media formatLabels
Print dimensions50 × 70 mm

Questions about this item

How much power does the built-in 1500mAh battery draw when the B21 prints continuously all day?

The 1500mAh rechargeable battery delivers up to two weeks of typical use on a four-hour charge, so daily printing sessions draw very little power.

What phone or tablet must I already own to set up and operate the B21 label printer?

You need an Android smartphone or an iPhone running iOS; the NIIMBOT app is not compatible with iPad tablets.

Can the B21 print to label rolls I already have from an older desktop label printer?

The B21 only accepts 50mm-wide thermal label rolls; wider or differently sized rolls from older printers will not fit.

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