Specifications: 1. Bluetooth 3.0 interface standard 2. Operating Distance to 10 meters 3. Modulation System: FHSS2.4G 4. Transmitting power:Class 2 5. Operating Voltage: 3.0-5.0V 6. Working Current: < 5.0mA 7. Standby Current: 2.5mA 8. Sleep Current: <200μA 9. Charging Current: ≥100mA 10. Standby Time: 100 days 11. Theory of working time: 25 days 12. Uninterrupted Working Time: 90 hours 13. Charging time:4-4.5 hours 14. Li-ion battery Capacity:Minimum 280MAH 15. Key life:500 million 16. Compatible with: iPad 2/The New ipad 3 17. Dimensions: 10.12 x 7.87 x 0.98inch/25.7 x 20 x 2.5cm(L x W x H) 18. Cable length: 82cm/32.28inches 19. Operating temperature:-20－+55℃ 20. Storage temperature:-40－+70℃ 21. Color:Rose Package includes: 1x Bluetooth Keyboard case for iPad 1x USB Charging Cable 1x Manual 1x Xtek4U exclusive design gift!