1. Bluetooth 5.4 technology: super new number transmission, ultra-low power consumption, and longer battery life. 2. Supports for iPhone and Android phones, allows you to wirelessly control your phone: volume +/-, previous/next song, pause/play, answer/hang up calls. 3. Long battery life, about 25 hours of continuous working time. 4. Strong compatibility: suitable for all non-intercom helmet headsets and intercom helmet headsets. Specification: Bluetooth version: BT5.4 Transmission distance: more than 10m Charging time: about 1 hours Continuous working time: about 25 hours Material: electronic components Color: Black Item Height: 4cm Item Width: 8cm Item Length: 12cm Applicable scene: suitable for all non-intercom helmet headsets and intercom helmet headsets Tips: If the button is not pressed for 30 seconds, it will be disconnected and enter sleep mode. Press any key at this time to wake up and automatically reconnect. Note: There may be slight size deviations due to manual measurement, different measuring methods, and tools. The pictures may not reflect the actual color of the item because of different photographing lights, angles, and monitors. Package includes: 1 X Remote Control 1 X USB Charging Cable 1 Set X Installation tools 1 X Manual