Using the latest CSR4.2+EDR Bluetooth technology, superior signal transmission, ultra-low power consumption, all Bluetooth devices, automatic answering function, switchable manual answering phone function, safe and fast, built-in high quality anti-interference microphone It can effectively realize hands-free answering and hang up calls. High fidelity sound , support last song or next song function, volume addition and subtraction, playback pause, automatic callback and other functions, easy to operate.Product parameters:1. Bluetooth version: V4.2+EDR2. Standby: 120Hours3. Transmission distance: 10M (transmission distance varies depending on environmental factors and mobile phone Bluetooth devices)4. MIC distance: 1 meter5. Lithium battery: 500mA