Features:  【Connection】:Support Wireless BT 4.0 connection, no need to download driver, compatible with Android and iOS smartphone. Please follow the user guide to download relative APP on your smartphone. It also supports connection printing with computers.  【Free Label Printing】: Label printing is more free, support excel import function, horizontal version, vertical version, time, 1D/2D bar code and table printing, scanning barcode, picture and voice recognition, etc. App has a lot of material bank, enrich your label creation.  【Rich Function】: The APP has large amount of templates, clothing, jewelry, mother and baby, and supermarket are all available, so you don't need to worry about design. It also supports continuous printing.  【Thermal Printing】: Built-in 2200mAh large capacity rechargeable lithium battery, working in low noise, the printer uses thermal printing technology, it does not need ink cartridge when using, low operation cost. Support label width 20-77mm.  【Convenient to Life】: Widely used in supermarket, clothing and jewellery store, communication industry for printing label, price, weight, date, name, etc. It's your work assistant to make your work more efficient.  【Portable & Lightweight】: Made of high quality ABS material, easy to take it anywhere. You can print anytime and anywhere when they connect successfully.    Specifications:  Model: B3S  Color: Black  Material: ABS  Printing Method: Thermal Printing  Resolution: 203dpi  BT Version: 4.0  Print Speed: 50-100mm/s  Label Width: 20-77mm  Roll Diameter: 25mm  Paper Type: Receipt Paper/Label Paper  Battery: Rechargeable Lithium Battery, 2200mAh  Interface: BT/USB  Display Screen: Support  System Supported: Compatible with Android, iOS, Windows  Power Adapter: 5V/1A  Item Size: 116 * 110 * 58mm / 4.6 * 4.3 * 2.3in  Item Weight: 380g / 13.4oz  Package Size: 230 * 170 * 70mm / 9.1 * 6.7 * 2.8in  Package Weight: 630g / 22.2oz    Notes:  PC Software Download Link: http://www.jc-ai.com/about2/show.php?id=25  Please use official designated consumable paper or label tapes.  Due to manual measurement, 1-2cm deviation is normal.    Packing List:  1 * Printer  1 * Charging Cable  1 * User Manual(English)