... , 3.3mA when Pressed, Li-Battery inside4.With power switch and rechargeable5.Works with Windows system,Windows Mobile system,Symbian S60 ... % to 50%.15.This product can connect all kinds of desktop computers and laptops, also can connect all kinds of support for bluetooth HID ... : IPDA, PDA, MID, UMPC, PDA, Tablet PC, etc. Can be used for Windows mobile phone, Nokia cellular phone, smart, please symbian ...