Features: - Bluetooth V4.0 - Portable lightweight and sweatproof design - Built-in microphone - Built-in rechargeable Li-ion battery - Multipoint pairing (connect 2 bluetooth device) - support connect 2 bluetooth device in the same time. - Support voice prompt in English - Support voice calls prompt， reporting calls number in English chinese - Support stereo listen music -Support change music，and adjust volume - Support multi language voice prompt: in English / chinese - Built-in 14.2mm nedymium driver - Clear bass resonance， CVC wind noise reduction， and superior sound isolation - Can be charged by base or charge USB cable can connect to earphone directly， then charged by computer. Package: 1 X stereo car Bluetooth Headset 1 X car charger