Functions: Thermal receipt printer, 48mm printing width, 50-80mm/s printing speed, clear printing and high efficiency. Direct thermal printing, eliminating the need for ink cartridges or consumables, environmentally friendly and saving money. USB and BT connection, support editing with "DLabel" (software or APP), support ESC/POS commands, compatible with Windows XP/7/8/10, Android, iOS. Built-in 1500mAh lithium battery, after fully charged, it can be used for 10 hours continuously, you can print anytime and anywhere. Specifications: Black colour Material : ABSandPMMA Print mode: thermal line printing Paper width: 58mm Print width : 48mm Print density: 384 dots / lines Print speed: 50-80mm/sec Roll diameter: max. 40mm Interface: USB and BT Print Command: ESC/POS Operating system: Windows XP/7/8/10, Android, iOS Voltage: DC 5V, 2A Battery: built-in 7.4V, 1500mAh lithium battery Charging time: 4 hours Standby time: 48 hours Working Environment: Temperature: -10-50℃, Humidity: 20-85% Storage Environment: Temperature: 15-20℃, Humidity: 45-75% Item Size: 10.2 x 7.4 x 4.5cm / 4.0 x 2.9 x 1.8in Product Weight: 196g / 6.9oz Package Weight: 365g / 12.9oz Packing list: 1 x thermal printer 1 x thermal paper 1 x USB cable 1 x User Manual