DUX DUCIS TK Series Bluetooth Keyboard Leather Case with Touchpad Features: 1. Not only a protective case, but also a built-in Bluetooth keyboard with more powerful functions 2. The keyboard and leather case can be separated 3. Bluetooth chip, fast speed, low power consumption, stable 4. Precise cut for easy access to all buttons and ports, providing you with smooth operation 5. Easy to insert and remove 6. Tablet PC is not included Product Specifications: 1. Bluetooth connection distance: less than or equal to 10m 2. Working voltage: 3.0-4.2V 3. Working current: less than or equal to 2mA 4. Standby current: less than 0.3mA 5. Charging current: 100mA 6. Working hours: more than 50h 7. Standby time: more than 100 days 8. Charging time: 2-3 hours 9. Battery capacity: 200mAh 10. Battery life: 3 years 11. Working temperature: -10-55 degrees Celsius 12. Material: TPU+PU+ABS 13. Charging interface: Type-C