Excelvan Universal Wireless Bluetooth Stereo Handsfree HeadseSt Sports Earphone with Mic(Gold) Bluetooth version: 4.0, can enjoy stereo music wirelessly from Bluetooth A2DP devices. In-ear type with comfortable earplug Built-in Microphone, Up to 24 hours talking time Wearing with this Wireless Hands-free Stereo Earphone: Can work with any Bluetooth devices, such as smart phone, tablet pc, laptop, PSP Support Hands-free call, making your driving and trip more Comfortable and Safer Easy controls for Answer/ End/ Reject calls, Volume and Playback Control, Redial last call