Compatible with iPod / iPhone / iPad Samsung i9220 / i9250 / i9300 / i9500 / i9190 / note2 / note3 HTC-G14 / Rezound / G22 Mi and come of the Android cellphones; one full charge can support taking 60000 photos; with 5 keys: power pairing shooting Android management iOS management; compatible with iOS 5.0 and above; power on: LED flashes; pairing: LED flashes slowly; paired: LED off; press pairing phone system key LED on paired; automatic sleep after 5 minutes of non-working; powered by power adapter of PC or cellphone: LED on during charging LED off when fully charged