AH21 Ultra-thin Detachable Bluetooth Keyboard Leather Tablet Case 1. Multi-angle stable support to meet the needs of different angles. 2. Detachable keyboard, more convenient to use. 3. All-round protection, to prevent the four corners of the equipment from bumping, wear and tear. 4. Low-noise keys do not disturb others. 5. Bluetooth chip, stable connection, fast speed and low power consumption. Parameters: 1. Bluetooth 3.0 standard interface 2. Effective operating distance: 10 meters 3. Modulation mode: GFSK 4. Working voltage: 3.0-4.2V 5. Working current: Less than 2.5mA 6. Standby current: Less than 0.3mA 7. Sleep current: Less than 40uA 8. Charging current: Greater than 200mA 9. Standby time: Greater than 100 days 10. Charging time: 3-4 hours 11. Lithium battery capacity: 200mah 12. Sustainable working time: 100 hours 13. Lithium battery life: 3 years 14. Key force: 80and-10g 15. Key life: 5 million clicks 16. Working temperature: -10 -and55 degrees 17. Product size: 26.6x19.3x2cm 18. Weight: 622g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store