The headphone is compatible with Android and IOS system It can connect to two smartphone at the same time Built-in clear microphone, and English voice prompt  Answer/reject/end call. Switch songs and adjust volume Light weight. It is comfortable to wear and useful for everyday purposes.

Compatible with IOS and Android systems

Specifications:

Requires V4.1 Bluetooth

fast connection

4 days standby

power display

HD Microphone 

music player

Frequency: 2.402G-2.480G

Range: 10M