Star Micronics 39633000 SM-L200-UB40 Bluetooth Low Energy Portable Barcode Printer Color: Black Printer Type: Desktop Cutter: Tear Bar Reliability MCBF: 37 million lines Media Type: Label Receipt Media sizes supported: Paper Width: 58 mm Paper thickness: 0.12 mm Max. Paper Roll Diameter: 40 mm Interface: Bluetooth 3.0, Bluetooth low energy technology (BLE 4.0) Power Supply: DC 3.7 V Lithium-lon Battery 1700mAh Battery Life: 20 hours in standby mode