Bluetooth Standard: Bluetooth 3.0 interface     Keys Number:84 pcs                                              Keyboard Style:removeble                           Keyboard Material:ABS                             Case Material:PU                                      Battery Standby Time:60days           Uninterrupted Working Time:60hrs              products size:25.5*19.5*3CM                  the stock colors is black /rose/purple/pink/blue/green/white 7colors to choose