Main features: With Bluetooth 4.0 function, support Android, iOS and Windows, convenient for you to print data from your device wirelessly - High efficiency, print speed can reach 50 - 89.9 mm/s, clear printing auto sleep, auto awake, save electricity - Support to control by smartphones, easier for you to operate, improve your working efficiency. Direct thermal printer uses thermal paper instead of ink and is typically smaller, quieter, faster, and more energy-efficient than dot-matrix printer - With 1500mAh 7.4V rechargeable lithium-ion battery, can work continuously up to 3 days - Small size and light, which is easy to carry for out working, such as the bill printing, administrative fees receipt printing, post receipt printing, restaurant ordering information printing, etc.Product name: Android/iOS/Windows Portable thermal Bluetooth printerModel Number: PT210Printing Method: Thermal line printingDimentions: 103.5 *78* 45.5 mmWeigh: about400g (including accessories: lithium-ion batteries, cable,test paper) Print Speed: gt; 90mm/sReliability: 100kmResolution: 203dpi(8dot/mm)Print width: 48mm (384dot)Roll Width (Max): 58 plusmn; 01mmCommunication Interfaces: Bluetooth 4.0Roll Diameter (Max): phi; le; 40mmRoll Type: ThermalRoll Power: Re-chargeable lithium batteryBattery: 7.4VDC /1500mACharging mode: external 9V/ 1.5ALanguage: Multi-languagesPrinting Parameters: Logo download and printing supportedWorking environment: -10-50Celsius (T), 10-90% (H)Font: 24x24 Dot simplified Chinese/ Taiwan or HK Traditional ( complex font) or international languages