1.Rechargeable Li-ion battery 2.Super slim 3.Bluetooth 2.0 4.QWERTY keys 5.fast delievery The perfect companion for your smart phone, PC, PS3,HTPC,that makes typing,chatting, and playing game easier than ever! Features:1.Pocket size, sleek and slim design, made of silicone.2.Support mobile operating system:Apple iPhone&iPad 4.0 and later, Google Android1.6 and later,Windows Mobile 6.0 and later, Nokia Symbian S60 V3.0 and later.3.Color LED for working status indication.4.Built-in intelligent power manage software for power conservation,With the automatic shutdown function when not Bluetooth connection .5.Working distance up to 10 meters (33 feet).6.49 responsive, accurate standard QWERTY keys lay out.7.Built-in 350 mAh Li-polymer rechargeable battery lasts for 60 working hours.8. Charge by Micro-USB port.9.Product dimension:115(L) x 60(W) x13(T) mm. Specifications:1.Bluetooth Version:Bluetooth V3.0,Class 22.Operation voltage: 3.7V DC3.Operation current: <5mA4.Standby current: 1.2mA5.Sleep current: <0.7mA