Bluetooth host function, low noise and high speed printing. Equipped with a large capacity rechargeable lithium battery 7.4V, 2250mAh. Support client local program upgrade, equipped with computer side driver. It can be used for 5- after fully . The indicator light be on when charging, and the indicator light be off after charging. The structure is exquisite and light, easy to carry. Type:Printer Printing method:thermal printing Effective printing width:78 mm Density is 8/mm, 384 points/line Printing characters: ANK:8 x 12, 16 x 24 GBK:16 x 24, 24 x 24 Characters per line ANK:48,32 GBK:24,16 Paper Type:Thermal Label Paper Paper width:80mm Reel Diameter:50mm Core diameter 15mm (minimum) Paper thickness:0.12mm Print head life:50 kilometers Barcode 1-D:UPC-A, UPC-E, -13, -8, CODE39, ITF25, CODABAR, CODE93, CODE128 2-D:QR code Instruction set:ESC / POS Power supply:AC100-250V/1.0A Working temperature:-10 - 50 degrees Celsius Storage temperature:-20 - 70 degrees Celsius Operating humidity:20-85% Storage humidity:5-95% Printing speed:90mm/s Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC100-250V Colour:Black Material:ABS Size:11.6x12.3x5.4cm Package Contents: 1 * Printer 1 * Roll Paper 1 * Power Adapter 1 * Printer Cover 1 * USB Cable 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.