NIIMBOT B21-Pro-G B21 Pro Thermal Label Maker, 300 DPI Bluetooth

For home organizers, students, and small businesses that need custom labels for everyday items or products, the NIIMBOT B21 Pro combines Bluetooth printing with a choice of creative label styles. Its 300 DPI resolution supports fine text, while the thermal printing system works without ink. What could a label maker do beyond basic text? The B21 Pro can also print photo-style stickers and black-and-red labels for highlighting key details.

Size & fit

The printer measures 2.4"D x 3.7"W x 5.1"H, making it a compact desktop tool for a home, kitchen, classroom, or small-business workspace. It supports label widths from 20 to 50 mm, so you can create labels for spice jars, bottles, storage boxes, return addresses, name tags, and product information. Bluetooth connects the printer to a phone or other supported device, letting you prepare a design in the NIIMBOT app and print it where you’re organizing or packing.

Why it’s worth it

The B21 Pro brings practical labeling and personal design together. Use standard labels for pantry containers and storage, clear or colored labels when the surface or look calls for a different finish, and photo-style labels for scrapbook pages, cards, or bookmarks. Black-and-red dual-color printing gives important information a visual distinction, while 16 grayscale printing adds another way to create detail. The 300 DPI output is designed for sharper, smaller text than the B1 and B21 models, which is useful when a label needs to fit more information in a limited space.

The NIIMBOT app for iOS and Android includes more than 1,500 icons and border materials, 249 free creative fonts, over 1,000 design templates, and support for multiple languages. More than 100 additional fonts are listed as VIP options. For PC printing, NIIMBOT provides a driver through its official website. This mix of templates and editing choices suits users who want more than a basic text-only labeler, from adding QR codes and barcodes to making personalized stickers for gifts and crafts.

Buyers often praise the printer’s appearance and the labels it produces, while feedback about overall value is mixed. Some buyers also note that selected fonts or printer options may require a monthly fee, so the free app resources are a useful starting point for everyday designs.

Key specifications

• Type: Portable thermal label printer
• Model: B21-Pro-G
• Resolution: 300 DPI
• Connectivity: Bluetooth
• Label width: 20 to 50 mm
• Printing features: 16 grayscale printing, black-and-red dual-color printing, photo-style labels
• Compatible devices: iOS, Android, and PC
• Included: Labels, Type-C cable, and user manual
• Color: Green

Should you buy it?

Choose the NIIMBOT B21 Pro if you want a compact thermal printer for both functional labeling and creative projects. Its range of label styles, fine-print capability, Bluetooth workflow, and app templates make it useful for organizing a kitchen or workspace, preparing school labels, or creating product tags and stickers for a small business. It’s especially suited to people who want one printer for clear everyday labels as well as more personalized designs.