Interface: USB                                                                                                             2> Keystroke life time over 5 million cycles, more durable                                                                        3> Compatible with Windows 95/98/2000/ME/XP/NT/Visa/Win 7, etc.                                                                                                                 4> Different languages versions available                                                                                        5> Environmental friendly, natural, pure and fresh                                                                              6> Multi color availableInterface: USB                                                                                                             2> Keystroke life time over 5 million cycles, more durable                                                                        3> Compatible with Windows 95/98/2000/ME/XP/NT/Visa/Win 7, etc.                                                                                                                 4> Different languages versions available                                                                                        5> Environmental friendly, natural, pure and fresh                                                                              6> Multi color available