Features: 1. Mini size, Light weight (total 260g including paper roll and battery), Durable performance 2. 1500mAH, 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 Product Parameters Printing way: Thermal sensitive line dot method Paper width: 58mm Paper thickness: 60 ~ 80μm Valid printing width: 48 mm Resolution: 8 dot/mm (230 dpi) Dot /line: 384 dots Printing speed: 50-90 mm/s Printing content: Support any language Outer dimension: 112*87*49mm Weight: 294g�Include the paper roll� Rolling paper Diameter: �40mm Interface: Bluetooth, USB Environment parameters: Working temperature: -10� 50 Working humidity: 20% � 85% Storing temperature : -20 � 70 Storing humidity: 5% � 95% Paper feeding method: Clamshell paper loading Paper sensor: LED indicator flashes when come to paper end Printing Command: ESC/POS compatible with commands set Power: 1600 mAH rechargeable li-ion battery Power alarm: The prower indicator will show red when the capacity is less than 15%