Feature: 1. Inkless Printing: This thermal printer uses inkless thermal printing, without the need for cartridges, toner or ink, which is clean and environment friendly. 2. Built In Block: This thermal printer has a built in block that can adjust the width of the paper slot, which can be switched flexibly to meet your printing needs in a variety of situations 3. Large Capacity Battery: This thermal printer has a built in 2000mAh rechargeable battery that can be fully charged in about 1.5 hours and can print 125 sheets of A4 thermal paper continuously. 4. Multiple File Formats Supported: This thermal printer supports multiple file formats, such as Word, Excel, PPT, TXT, JPG. 5. Wide Application: This thermal printer has a wide range of applications and is suitable for offices, business trips, schools, cars and other scenarios. Specification: Item Type: A4 Thermal Printer Material: ABS Connection: Bluetooth 4.0 or Above Compatibility: for Android and for iOS Mobile Phones and Laptops Printing Specification: 200dpi Battery Capacity: 7.4V 2000mAh Rechargeable Lithium Ion Battery x 1 ( Shipped With Built In Battery ) Automatic Shutdown: 30min Charging Time: Approx. 1.5H Continuous Printing Endurance: 125 Sheets of A4 Thermal Paper Print Speed: 10mm/s Charging Interface: Type C . Package List: 1 x Printer1 x Manual1 x Data Cable1 x Paper Roll