1. Mini size, Light weight (total 260g including paper roll and battery), Durable performance 2. 1600mAH, 7.4V rechargeable li-ion battery, quick charge 3. Continuously work for 5 hours or 200km 4. 80mm/s high printing speed 5. Standard interface: RS-232, USB; Bluetooth or IR interface optional 6. Support various languages, easy to use Printing Method: Direct thermal printing Printing Width: 48mm Resolution: 203dpi Printing Speed: 90mm/s Paper Width: 57.5±0.5mm Paper Loading: Easy paper loading Interface: Bluetooth+USB Emulation: ESC/POS Certificate: FCCã??CEã??3C Power: 1600mAh rechargeable li-ion battery Certificate: FCC, CE, 3C Dimension (LxWxH): 114.5*87*49mm Color: Black