... Sequence Frequency Hopping (FHSS).6, transmit power: Class 2 level. 7, built-in lithium battery, full use of more than 3 ... .8mm * 6.70mm see photos. 9, windows xp, Vista, windows 7 free drive systems.10 It can be used to connect ... PC, Tablet PC and so on. For windows mobile phones, Nokia S60 mobile phone, smart phone, PC input up to speed typing. Popular leather bluetooth keyboard for ...