Printer specifications

LEDs Status LED (blue/green/red)
Charging LED (orange)
Printing Method Direct thermal printing with a line thermal print head
Printing Resolution 300 dpi × 300 dpi
Print speed 15 seconds/sheet
(standard text on thermal paper with 7 % coverage at an ambient temperature of 25 °C)
No. of pages that can be rinted 100 or more during continuous printing with a fully charged battery. Using Bluetooth sleep mode will affect this figure. (Based on 7% coverage at an ambient temperature of 25 °C.) (Standard paper manufactured by Brother: A7 thermal)
Paper supply method Brother paper cassette, automatic paper feed mechanism
Paper Brother A7 cut paper (74 mm × 105 mm)
Print area 69 mm × 100 mm (C51: 62 mm × 95 mm)
Power supply AC adapter for charging, lithium ion battery 7.4 V
Interface Complies with USB Ver. 2.0 (Full Speed) and compliant with Bluetooth ver. 2.1 + EDR class 2 serial port profile supported
Dimensions 100 mm (W) × 160 mm (D) × 17.5 mm (H) (not including projection)
Weight 300 g (including the lithium ion battery and a paper cassette containing 50 sheets of plain thermal paper)