... 5 10meters control pocket size case build in battery Bluetooth keyboard for iPhone 5Specification:Built in Li-on battery, rechargeabe via USB ... cable. support Apple & Windows system ,VISIA,MAC 1.Bluetooth V3.0, 2.Working distance:10m3.Battery:Polymer lithium ion ... battery (3.7V)4.Volume:250MA5.Charging time:2 hours,6.Standby ...