Portable Label Printer Niimbot B21 Black

Niimbot B21 portable label printer in black is a compact thermal printer for on-the-go labeling that connects to a smartphone via Bluetooth 4.0. It uses thermal paper (no ink) and ships with a 50 x 30 mm label roll sufficient for about 230 labels. The device is powered by a 1200 mAh rechargeable lithium battery and supports common label widths from 20 to 50 mm. The Niimbot app for Android and iOS enables creating and customizing text, fonts, barcodes, QR codes, time/date, Excel table imports and serial printing.

Advantages

The Niimbot B21 prints without ink using thermal technology, which reduces running costs and maintenance. Bluetooth 4.0 provides a fast and stable wireless connection to mobile devices. A built-in 1200 mAh battery offers long operating time and the printer is charged via a USB-C port; a USB-A to USB-C cable is included. The compact and lightweight design (130 x 94 x 61 mm, 299 g) makes the unit easy to carry and use in stores, offices or at home.

Suitable for

• Labeling food containers, spices and home storage
• Printing prices, best-before dates and EAN/barcodes in retail
• Creating QR codes and simple product or inventory labels
• Printing receipts or notes on compatible thermal paper (cash-register style)

Key specifications

• Manufacturer: Niimbot
• Model: B21
• Color: Black
• Type: Thermal label printer
• Resolution: 203 dpi
• Roll width supported: 20–50 mm
• Included roll: 50 x 30 mm (approx. 230 labels)
• Battery: Rechargeable lithium, 1200 mAh
• Charging port: USB-C (input 5 V DC, 1 A); charging time 3–4 h
• Wireless: Bluetooth 4.0
• Power: 4 dBm
• Operating temperature: 5 °C to 40 °C
• Dimensions: 130 x 94 x 61 mm; Weight: 299 g

How to use

Charge the Niimbot B21 using the supplied USB-A to USB-C cable until fully charged (about 3–4 hours). Install the Niimbot app on an Android or iOS device and pair the phone with the printer via Bluetooth 4.0. From the app, choose label size and type, design the label with text, font, barcode or QR code and send the print job. For serial printing or importing data, use the app’s batch or table import functions. To switch to regular thermal paper (cash-register style), change the paper type in the app settings and load the appropriate paper roll.

Usage recommendations

Use only thermal label paper within the supported width (20–50 mm) for reliable printing. Keep the printer and roll away from direct heat and moisture. Charge the battery before long printing sessions and update the Niimbot app and firmware when updates are available to ensure compatibility and access to new features.