Printing technology Direct Thermal
Print resolution 203 dpi x 203 dpi
Print speed (Depends on the media used.) Maximum 127 mm/s*
Maximum print width 104 mm
Maximum print length 3000 mm
Minimum print length 12.7 mm


Weight (including battery) Approximately 850 g
Dimentions Approximately 153 mm (W) x 159 mm (D) x 68 mm (H)


USB USB Ver. 2.0 (Full Speed) (mini-B)
Bluetooth Version 4.2
Supported profiles: SPP, OPP, HCRP, GATT
Supported protocol: iAP
Wireless LAN (RJ-4250WB only) IEEE 802.11g/n (Wireless Direct)
IEEE 802.11a/b/g/n (Infrastructure Mode)
WPS 2.0


Operating temperature Operate:
The battery: -20°C to 55°C
AC adapter: -10°C to 40°C
Car adapter: -10°C to 50°C
0°C to 40°C (recommendable: 5°C to 35°C)
If the internal temperature of the battery is out of this range, charging may stop.
Operating humidity 10% to 90% (No condensation, Maximum wet bulb temperature: 27°C)
Storage temperature -20°C to 60°C
Storage humidity 10% to 90% (No condensation, Maximum wet bulb temperature: 45°C)

Power supply

Battery Rechargeable Li-ion battery: 7.2 V
Adapter (optional) AC adapter (15 V)
Car adapter (optional) Cigarette lighter car adapter (12 V (DC))
Maximum number of labels 10,000 labels *
Charging time 4 hours (when charging at 23°C with the printer turned off, and using a new battery)

Media specification

Media type Receipt, Gap/Black mark Label, Tag
Media width 45 mm to 114 mm
Thickness Receipt: 0.058 mm to 0.090 mm
Tag: 0.090 mm to 0.135 mm
Label: 0.080 mm to 0.170 mm
Roll outside diameter (max) 58 mm
Core diameter (min) Receipt: 12.7 mm
Label: 25.4 mm
Media sensor Transmissive, Reflective
*Using Brother's print test data (7% coverage, 102 × 29 mm) at 23°C when performing continuous printing using a USB connection with a new, fully-charged battery.