GranVela R550 4.1 Mini stereo music Bluetooth headset with Camera Control Self-timer with Microphone for iPhone, iPad, Android-Yellow Fully compatible, with Smart compatible with all brands of digital products Multipoint, connect two cellphones at the same time. Strong noise reduction, pure surround sound. IOS power display making and receiving a phone call. Play music, track forwarding/backwarding. Support Intelligent voice prompt, music play and pause. Long distance shooting, remote photo Controller Double click MFB key, switching calls for three-way calling Earphone camera controller: Enter Camera mode of your phone, double click MFB Key. Chinese/English voice switch: when the earphone enter into pairing mode, long press Volume- for 2s. Earphone power indicator: Long press Volume+ and V- at the same time for 2s