With Bluetooth 4.0 , support for Android, for iOS and for , convenient to print data from your device wirelessly High efficiency,print speedcan reach 50 - 89.9mm/s, Direct thermal printer uses thermal paper instead of ink and is typically smaller, quieter, faster. 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. Print method: thermal line printing Interface: USB+Bluetooth 4.0 Paper width: 57mm Print width: 48 mm Rolling paper diameter: 30mm Life cycle time: 50km ( printing density under 12.5 percent ) / 100 million pulses Barcode type: UPC - A / E, - 13 / 8, CODE39 / 93 / 128, TIF, CODABAR; 2D: QR code, PDF417 Internal characters: ASCII CH ( 8 x 16, 9 x 17, 9 x 24, 12 x 24 ); GB18030 ( 16 x 16, 24 x 24 ) Printing :ESC / POScompatible with order sets Free App Installed Freely: this receipt printer can use some App 1. LOYVERSE(Only support for Android) 2. IREAP 3. SRS 4. CAYSNPRINTER 5. RECEIPT GENERATOR Voltage: AC220V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Color: Black Material: ABS Package Contents: 1set x thermal printers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.