... broadcom bluetooth chip 4.Operation distance: 10m Bluetooth keyboard for ipad2 case:*2-in-1:Wireless Bluetooth Keyboard + Folding Leather ... meters.*The Keyboard can also work for windows, for Mac, for Linux, for iPad, for iPhone 4G, for iPhone 3GS if upgraded to IOS4 ... operation, need no drive, just plug and play.*Ideal for students, business persons, travellers, etc.Specifications:-Bluetooth standard: ...