Bluetooth wireless keyboard Aluminum hard case iPad 2
specificationBluetooth 2.0 interface standardOperating distance to 10 metersModulation System:GFSKOperatin Voltage:3.0-5.0VWorking Current:smaller than 5.0mAStandby Current:2.5mACharging Current:larger than 100mAStandby Time:60 daysCharging Time:4-5 hoursLithium Battery Capacity:160mAUninterrupted Working Time:55 hours