Multi-point connection: A1 helmet Bluetooth headset can connect to two Bluetooth-enabled devices at the same time, easily switch between smartphones, GPS or other devices without constantly disconnecting and reconnecting. Stream music, receive navigation prompts, and more with seamless integration.Hi-Fi Stereo and ENC Noise Control: Experience excellent audio quality with our advanced 50mm pen speakers, advanced ENC noise reduction technology reduces background noise, A1 motorcycle Bluetooth headset delivers clear sound in any environment. Whether cruising on the highway or exploring the back roads, enjoy your favorite music, GPS navigation, and hands-free calls clearly and accurately.800mAh Longer Battery Life: A1 Bluetooth headset speaker with 800mAh lithium-ion battery and USB-C fast charging, 33 hours of continuous calls, 35 hours of listening to music, 500 hours of standby, the helmet headset can be fully charged in just 1.5 hours, ensuring you can use it continuously all day long.BT5.3 and IPX6 Waterproof: Bluetooth 5.3 has greater compatibility. A1 Motorcycle Helmet Speaker is IPX6 waterproof, helping you cope with more weather conditions. Just one click to activate A1 Voice Assistant for hands-free calls, control music playback, and access GPS directions.