Built-in slimmest wireless Bluetooth 3.0 keyboard. Built-in Rechargeable lithium battery lasts for approximately 70hours per charge. Energy saving keyboard sleep mode Ultra-thin Bluetooth Keyboard color: Gold Sleek,compact design for maximum portability and convenience. Provides quicker and more comfortable typing and improves the accurancy of the operation. Easy to remove from the PU leather case. USB charging cable included. material: plastic 1: standard 3.0 Bluetooth solution 2: Effective distance 10 meters 3: Standby time: 100 days 4: Continuous working time: 70 hours 5: Charging time: 4-5 hours 6: Lithium battery capacity: 200mha 7: Lithium battery life: 3 years 8: Button life: 500 million times Package Contents: 1 x Slim Case 1 x Bluetooth Keyboard 1 x Micro-USB Charging cable 1 x User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.