Niimbot B21 Bluetooth Thermal Label Printer – Portable Label Maker
Niimbot B21 Bluetooth Thermal Label Printer – Portable Label Maker
Niimbot B21 Mini Portable Bluetooth Thermal Label Printer
Meet the Niimbot B21 — a compact, pocket-sized thermal label printer that lets you create professional-quality adhesive labels anytime, anywhere. Whether you're organizing your home, tagging clothing, printing barcodes, or labeling products for your business, the B21 delivers crisp, clear prints with zero ink or toner required. Simply connect via Bluetooth, design your label in the free NIIMBOT app, and print in seconds.
Made in Mainland China.
Why You'll Love the Niimbot B21
- Wireless Bluetooth Connectivity — Pairs effortlessly with your smartphone via the free NIIMBOT app (iOS & Android). Design and print labels directly from your phone.
- No Ink or Toner Needed — Advanced thermal printing technology produces sharp, clear text and graphics without messy cartridges. Enjoy hassle-free maintenance.
- Compact & Portable — At just 130 × 94 × 61 mm, the B21 fits in your bag, drawer, or desk without taking up space. Take it to the office, warehouse, or shop floor.
- Fast Print Speed — Prints at 30–60 mm/s so you spend less time waiting and more time getting organized.
- Built-In Rechargeable Battery — The 1,200 mAh battery charges fully in 3–4 hours via USB Type-C, keeping you productive all day.
- BPA & BPS Free Labels — NIIMBOT thermal label paper is waterproof, anti-oil, tear-resistant, non-toxic, and degradable — safe for everyday use in any environment.
- Versatile Label Support — Supports print widths from 20–50 mm and a max resolution of 203 DPI, ideal for 1D/QR barcodes, price tags, address labels, clothing tags, product labels, cable markers, and more.
- Multiple Color Options — Available in Red, Green, Black, and White to match your style or workspace aesthetic.
- CE Certified — Meets international safety and quality standards for your peace of mind.
Key Specifications
| Model | Niimbot B21 |
| Material | ABS |
| Dimensions | 130 × 94 × 61 mm |
| Print Technology | Thermal (No Ink/Toner) |
| Print Speed | 30–60 mm/s |
| Max Resolution | 203 DPI |
| Print Width | 20–50 mm |
| Connectivity | Bluetooth (App Controlled) |
| Charging Interface | USB Type-C |
| Battery Capacity | 1,200 mAh |
| Charging Time | 3–4 Hours |
| Voltage | 100–240V |
| Colors Available | Red, Green, Black, White |
| Certification | CE |
| Origin | Mainland China |
Perfect For
- Home organization & storage labeling
- Clothing, jewelry, and retail price tags
- Barcode (1D & QR) label printing
- Supermarkets, food & fresh produce labeling
- Office address & shipping labels
- Cable & wire management labeling
- Medical & pharmaceutical product tagging
⚠️ Please Note: This printer is not compatible for use in South Korea. For transparent labels, open the NIIMBOT app → Me → My Device → Paper Certification → Transparent, then restart the printer.
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Frequently Asked Questions
Q: Does the Niimbot B21 thermal label printer require ink or toner cartridges?
A: No! The Niimbot B21 uses thermal printing technology, which means it generates heat to print directly onto thermal label paper. There are no ink cartridges, toner, or ribbons required — saving you money on consumables and making maintenance virtually effortless.
Q: What app do I need to use the Niimbot B21, and is it free?
A: You'll need the free NIIMBOT app, available for both iOS and Android devices. The app provides a wide variety of fonts, frames, icons, and templates, allowing you to design custom labels and send them directly to the printer via Bluetooth with a single tap.
Q: What types of labels can I print with the Niimbot B21?
A: The Niimbot B21 supports a wide range of label types, including barcodes (1D and QR codes), price tags, clothing tags, address labels, product labels, cable markers, and more. It supports print widths from 20 to 50 mm, making it suitable for industries including clothing, retail, food, jewelry, and office environments.
Q: How long does the battery last, and how is it charged?
A: The built-in 1,200 mAh rechargeable battery charges fully in approximately 3–4 hours using the included USB Type-C cable. It provides reliable cordless operation throughout your workday, making the B21 a truly portable label-making solution.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.