Printing Technology: Thermal (Ink-less), no ink required, making it economical and environmentally friendly. Resolution: 203 dpi for clear printing. Supported Paper Width: Supports label sizes with a width ranging from 20mm to 50mm. Connectivity: Supports wireless Bluetooth connection with iOS and Android devices through the "Print Master" app, and can also be connected to a computer via data cable. Battery: Features a built-in lithium battery (typically ranging from 1200 to 1500 mAh depending on the version/source), providing 3-4 hours of continuous use. Control App: Used with the "Print Master" app.