J3128D For iPad 10th Gen 10.9 2022 Backlight Bluetooth Keyboard Leather Case 1. Bluetooth 3.0 standard interface 2. Effective operating distance: 10 meters 3. Modulation method: GFSK 4. Working voltage: 3.0-4.2V 5. Working current: about 8mA (when the touchpad is working) 6. Standby current: about 0.3mA 7. Sleep current: about 40uA 8. Charging current: 200mA 9. Standby time: about 100 days 10. Charging time: 2-3 hours 11. Lithium battery capacity: 500mAh 12. Sustainable working time: about 100 hours (when the lights are turned off) 13. Lithium battery life: 3 years 14. Button force: 80and-10g 15. Button life: 5 million clicks 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.