Features:Exquisite headphone with ear caps design, which guarantees delivering perfect sound quality.With hidden ear-hook design to ensure the comfort and solidity when wearing the headset.Adopts advanced BT4.1 technology, which ensures more stable BT transmission and stronger BT signal.Supports lossless music playing, easy to adjust volume and switch music songs.Supports voice control answering phones.Supports voice switching in English/Chinese.Supports incoming calls voice broadcast for not missing any important calls.Supports last number of redial/operating voice prompts function.Supports voice software like WeChat/car navigation/QQ.Supports for IOS system showing the battery power.Built-in 2*75mA polymer lithium battery, providing longer music playing time and talking time.Compatible with most BT-enabled smartphones, easy to use.Supports to connect two smartphones at the same time, very convenient.