Feature: 1. The shell supports a uniquely designed front cover that folds into a stand for easier viewing of the video. 2. Keyboard color backlight. 3. Accurately fit the corners of the equipment. 4. Easy access to all buttons and ports for smooth operation. 5. Easy to insert and remove. 6. Does not include a tablet. Product specifications: 1. Bluetooth: 3.0. 2. Effective operating distance: 10 meters. 3. Modulation method: 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 40 microamps. 8. Charging current: greater than 200mA. 9. Standby time: more than 100 days. 10. Charging time: 3-4 hours. 11. Lithium battery capacity: 400mAh. 12. Sustainable working hours: greater than 100 hours. 13. Lithium battery life: 3 years. 14. Button force: 70-90g. 15. Key life: 5 million clicks. 16. Operating temperature: -10 to 55 degrees Celsius. 17. Product size: 165x252x24mm. 18. Material: outer skin fine sheep grain PU material, ABS plastic seven color light keyboard.