1、Wide Application: Widely used in various industries, for cash receipts and delivery receipts in supermarkets, shopping malls, restaurants, etc. 2、Easy Operation: Ergonomic design with curved shape, completely designed according to the palm of the hand, comfortable and easy to grip. Also very easy to replace the paper, simply place the paper with the printing side facing downwards. 3、Bluetooth Connection: Adopting Bluetooth SOC chip, Bluetooth 5.0 dual mode Bluetooth pf BR/EDR+BLE that supports 55 meters range in open area, stable and reliable connection. 4、Clear Display: With battery level display, Bluetooth connection indicator, and battery level display, it is more intuitive and user friendly. 5、Built in Battery: Polymer lithium ion electronic 7.4V 1500mA, with built in power management chip to avoid overcharging, protecting the battery, and extend battery life. Item Type: Bluetooth Thermal Printer Material: ABS Battery: 1 x 7.4V polymer battery with 1500mAh capacity, shipped with built in battery. Standard Voltage: 7.4V Maximum Charging Voltage: 8.4V Printing: Line Thermal Printing Print Points: 384 points per line. Point Density: 8 points/mm. Printing Speed: Maximum Printing Speed 90mm/s Printing Width: Approx. 48mm / 1.89in Paper Output: In the direction of paper output. Paper Width: Approx. 58mm / 2.28in, 57.5±0.5mm. Paper Thickness: 0.048mm-0.08mm Maximum Coil Diameter: Approx. ≤ 41mm / 1.61in Connection: USB or Bluetooth. Barcode Type: For 1D: For UPC-A, for UPC-E, for JAN13 (EAN13), for JAN8 (EAN8), for CODE39, for ITF, for CODABAR, for CODE93, for CODE128. For 2D: For QR, for PDF 417. Printer Mechanism Lifespan: 13 million lines. Print Head Lifespan: 50km. Mean Time Between Failures: 3,000 hours. Average Number of Faultless Printing Lines: 12 million lines. Drop Test: Can withstand multiple drops from 1.0m to the concrete floor. Upgrading: Supports firmware upgrade and APP adaptation. 1 x Bluetooth Thermal Printer 1 x USB Cable 1 x User Manual