NIIMBOT B21 Label Maker
- Inkless thermal printing
- 203 dpi resolution
- 50 mm maximum media width
- 50 x 30 mm white label roll included
- Bluetooth with iOS and Android app
- 1500 mAh battery, Type-C charging cable included
- Auto-detect label feature
- 321 g, 2.4 x 3.7 x 5.1 inches
Updated 23 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A pocket label maker for home, office and school labeling from a phone. Output is single color, and the listing's scanner and copy-speed entries do not apply.
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ASIN: B09C1VWT2NModel: B21
Overview
A home, office or school user who wants quick labels gets a pocketable inkless thermal printer controlled from a phone app. Bluetooth handles the connection, and the box adds a first roll plus a charging lead.
Inkless printing and phone control are the reason to buy, with a starter roll and a charging cable in the box. The limits: monochrome output only, label width is capped, and several spec fields describe features a label maker does not have.
Who it's for
Organizers and small offices that print short labels on demand suit the printer, which is light enough to carry in a bag. Buyers who want color, long continuous tape or computer software should check what the app supports.
Pros and cons
- Inkless thermal printing
- Bluetooth app control
- Auto-detect label feature
- Starter roll included
- Monochrome output only
- Label width capped
- Scan and copy entries do not apply
- App required for use
Performance notes
A heated print head darkens thermal label stock, so there is no ink or toner to replace, and detail is limited to the head's resolution. The printer reads the loaded label size automatically to avoid mismatched jobs. Battery life depends on how many labels are printed per charge, which the listing does not give.
Specifications
| Brand | NIIMBOT |
|---|---|
| Model | B21 |
| Dimensions & fit | |
| Color Depth | 1 bits_per_pixel |
| Item Dimensions D X W X H | 2.4"D x 3.7"W x 5.1"H |
| Item Weight | 321 g |
| Maximum Media Size | 50 millimeters |
| Paper Size | 50 x 30 millimeters |
| Capacity & performance | |
| Printer Output Type | Monochrome |
| Power & efficiency | |
| Wattage | 1500 milliamp_hours |
| Construction & materials | |
| Color | Black |
| Color Pages Per Minute | 50 pages_per_minute |
| Compatibility & installation | |
| Compatible Devices | Laptops |
| Hardware Interface | USB Type C |
| Included components | |
| Unit Count | 230 Count |
| Warranty & support | |
| Warranty Description | 2 Year Manufacturer |
| Warranty Type | Limited |
| Other details | |
| Additional Printer Functions | Scan |
| Control Method | App |
| Controller Type | Android |
| Duplex | Automatic |
| Item Type Name | Multifunction Printer |
| Maximum Print Resolution Black And White | 203 dots_per_inch |
| Model Series | B21 |
| Other Special Features Of The Product | Portable, Inkless, Bluetooth Multi-Connection, Auto‑Detect Label |
| Print Media | Labels |
| Printer Type | Thermal |
| Resolution | 203DPI |
| Specific Uses For Product | Home, Office, School |
Frequently asked questions
How do I connect the NIIMBOT B21 to my phone?
The printer connects over Bluetooth and is controlled by an app on iOS or Android. The listing does not describe the pairing steps beyond that.
Does the NIIMBOT B21 need ink?
No. The listing calls it an inkless thermal printer, and the roll in the box is white thermal label stock.
Can the NIIMBOT B21 print from a laptop?
The compatible devices field lists laptops, but the description names iOS and Android apps. The listing does not describe computer software.
What label sizes does the NIIMBOT B21 use?
The maximum media width is 50 mm, and the included roll is 50 x 30 mm.