1. Multifunctional Motorcycle Helmet Speakers: Motorcycle Helmet Headset Wireless Technology, connects two mobile phones at the same time, and you can choose one device to switch between listening to music, navigation and answering calls, allowing you to enjoy the ride ly and happily. 2. HiFi Stereo and Smart Noise Reduction: Motorcycle Helmet Speakers Configuration 40mm graphene diaphragm for excellent sound quality in music and calls. The microphone's dual noise cancellation and windproof sponge allow for clearer calls. 3. Battery Fast Charging: Motorcycle Helmet Speakers is builtin 1000mAh battery. It 25 hours of music playback, turn on the light endurance about 10 hours, and up to 18 months of standby time, supports TYPEC fast charging and the battery level can be displayed on the phone. It can ride outdoors for a long time, solving your charging problem. 4. IPX6 and Playback Control: The Y20 Motorcycle Helmet Speakers is IPX6 waterproof, helping you handle all weather conditions, such as dust, rain, storm, snow, and low temperature of 20°F. You can ride on the road without fear of rain splash or mud invasion.