... keys 2,for Apple OS 3,Aluminum alloy material 4,Bluetooth 3.0 interface stand 5,bluetooth keyboard for mini ipad ... ,bluetooth keyboard for mini ipad Bluetooth 3.0 interface USA broadcom schemeFrequency: 2.4-2.4835GHZ Receiving sensitivity:-78dBm(Standard)RF ... time-60days,Uninterrupted Working Time:55 hoursDimension : 20.4*13.8*0.8cmGrass Weight: 0.3KGSystem Supported:IPAD mini1. Mini ipad 2.Apply ...