Specification: Item Type: Bluetooth Keyboard Bluetooth Version: Bluetooth 2.0 Compatible Mode: IPAD 2 3 4 Key QTY: 82pcs PC Connecting Type: Wireless Shortcut Key: Yes Coating Material: Aluminum Alloy + ABS Bluetooth Operating Distance: 10M Modulation Mode: 2.4GHz Working Voltage: 3.0~5.0V Working Current: <5.0mA Standby Current: 2.5mA Sleep Mode Current: <200μA Charging Current: ≥100mA Standby Time: 55 Days Charging Time: 4-4.5hrs Lithium Battery Capacity: 160mA Continuous Working Time: 55hrs Battery Service Life: 3years Battery Size: 40 x 20 x 35mm Buttons Service Life: 5Million Times Working Temperature: -10 ~ +55℃ Humidity: 20%-50% Features: Brand new and high quality Bluetooth keyboard Compatible with IPAD 2 3 4 Built-in rechargeable lithium battery provides stable and long-lasting power supply for your iPad Special “Home” button can control many procedures Ultrathin mute and anti-dust design Smart sleep modes can save more energy