Their printed output is the same. Both are 300dpi, both do red-and-black dual colour and 16-bit grayscale, both take 20–50mm labels up to 350mm long, and both run on the NIIMBOT app. Put two labels side by side and you could not tell which machine made them. So the question is not which prints better — it is whether you want to reach for your phone every time. The B1 Pro at S$56 is the default pick. Pay the extra S$10 for the B2 Pro only if printing without a phone would genuinely change your day.
What is identical
Worth being clear about, because it is most of the machine:
- 300dpi printhead — sharp small text and reliably scannable barcodes
- Red-and-black dual colour on compatible stock
- 16-bit grayscale for logos and photos
- 20–50mm label width (48mm maximum print width), 8–350mm length
- Bluetooth 5.0 and USB-C, 2–3 hours to charge
- The same app: AI image recognition, PDF import, 16,000+ templates, and Excel batch import
- Inkless direct thermal — no cartridge, ever
The B2 Pro's offline mode is the real difference
The B2 Pro has built-in templates and a clock, so it prints real-time timestamps, recent history and saved templates with one press and no phone connected. That sounds minor until you picture the actual job: a kitchen labelling prep containers with today's date, or a bakery tagging trays through a shift. Unlocking a phone, opening an app and waiting for Bluetooth — fifty times a day, with wet or floury hands — is the thing people quietly give up on.
If your labels are mostly dates, batch numbers or one repeated template, that is what the S$10 buys. It suits cafes and food counters more than anything else in the range.
The B1 Pro is the one built for sharing
The B1 Pro's spec sheet leads on connectivity instead: 10-device sync for 3 iOS and 7 Android phones at once, plus Bluetooth printing from a Windows PC. For a shop where several staff print from their own phones, or where someone designs on a desktop and prints from there, that is the more useful set of features — and it is the cheaper machine.
It is the natural pick for boutique and retail tags where labels vary and someone is designing them properly rather than repeating one template.
Size and weight barely separate them
348g against 355g, and 126 × 91 × 67mm against 134.6 × 92.5 × 62.5mm. The B2 Pro is a little shorter, the B1 Pro a little slimmer. Both fit a hand and a drawer. Do not let this decide it.
They take the same labels
Either machine runs the standard 20–50mm range, so your stock is interchangeable — browse the B1 and B21 label rolls. One caveat worth knowing before you count on the headline features: dual colour and grayscale both need special stock. Red-and-black needs dual-colour labels and photo printing needs photo label stock, both sold separately. On ordinary white rolls, both printers print black.
So which one?
Take the B1 Pro unless you have a specific reason not to. It costs less, shares across a team and prints from a PC, and its output is identical.
Take the B2 Pro if your labels are repetitive and time-stamped and you want them printed without unlocking a phone.
If roll changes happen constantly and you would rather pay for that, the B21 Pro at S$86 is the one with the no-spindle loading — our 2-inch comparison covers that split, and the 2026 buying guide works through the whole range by label width. See all the 20–50mm printers; every one ships from our Singapore warehouse with a 1-year local warranty.