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Compact pink label printer with built-in cutter and tape roll visible

CASIO P21 label printer 14x40mm thermal USB

SKU CH-E46C-KWF6P MPN P21

A compact Bluetooth label printer that produces 14×40 mm thermal labels from a phone app with hundreds of templates

  • Interface typeUSB
  • Cutter typeRewind
  • Ribbon typeThermal
  • Accepted media sizes4.53 in × 2.36 in × 6.5 in
  • Print dimensions14 × 40 mm millimeters
  • Product dimensions14.33 in W × 12.83 in H × 9.06 in D
  • Ultra-portable design fits in a pocket
  • 203 DPI thermal printing needs no ink or toner
  • Bluetooth link to iOS and Android via Nelko app
  • 3,600+ icons, 750 templates and 29 languages included
  • Rechargeable battery supports extended mobile use

Portable Bluetooth label printer

The Casio P21 is a pocket-sized thermal label printer that connects to iOS and Android phones via Bluetooth and prints black text on 14x40 mm tape. It ships with three label rolls and a carrying case, and the companion Nelko app provides thousands of icons, borders, templates and 29 languages for school, office or home organisation.

Thermals noise and power

Direct thermal printing means no ink or toner, so the only consumable is the tape itself. The built-in rechargeable battery supports extended mobile use and is charged over USB; no charging adapter is included in the box. Operation is quiet enough for classroom or office environments.

Label width decides fit

The printer only accepts 14 mm wide tape, so every label is limited to that width regardless of the 40 mm or 50 mm length options. Buyers who need wider labels or continuous rolls must choose a different model.

How it compares

Measured against everything we stock in Thermal Label & Receipt Printers, at today’s prices. Recalculated every night.

Price $51.99
Cheaper than about 70% of the 858 comparable items (median $84.99).

Specifications

Product
Brand nameCASIO
Model nameP21
Part numberP21
Ports & slots
Interface typeUSB
Size & build
Product dimensions14.33 in W × 12.83 in H × 9.06 in D
Compatibility
Accepted media sizes4.53 in × 2.36 in × 6.5 in
More details
Cutter typeRewind
Ribbon typeThermal
Print dimensions14 × 40 mm millimeters

Questions about this item

How do I load the 14x40mm label roll and connect the P21 via Bluetooth in the Nelko app?

Open the cover, drop the roll in with the label side facing out, pull the leading edge past the cutter, close the cover, then open the Nelko app, tap the Bluetooth icon and select P21 from the device list — do not pair in the phone system settings.

What consumables will I need to replace and how many labels come in each roll?

The printer uses direct thermal technology so there is no ink or toner; you only replace the label rolls, which are supplied in 180-label or 540-label packs for the 14x40mm size.

What limits continuous printing on the P21 before I must pause?

The built-in rechargeable battery powers extended sessions, but heavy use will drain it and require a recharge via USB; no charging adapter is included.

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