【Super long battery life】The helmet headset wireless adopts a large 800mAh rechargeable battery, supports TYPE-C fast charging, only charges for 2 hours, the working time can reach 20 hours, the standby time can reach 18 months, and supports displaying the battery power on the mobile phone. You don't have to worry about battery life.【800 meters dual rider full-duplex intercom】Experience seamless communication while riding a motorcycle with the helmet intercom kit. No need to shout, you can have a real-time conversation with your riding partner 800 meters away. Easily share your enthusiasm for motorcycle travel, skiing and other activities.【IP67 waterproof and dustproof】The intercom is highly adaptable to different weather conditions and has an IP67 waterproof and dustproof rating. It is suitable for most open, modular and full-face helmets, and can withstand harsh conditions such as dust, rain, storms, snow and low temperatures. It is an ideal choice for motorcycle and snowmobile riders.【Auto Answer & Voice Control】The motorcycle helmet headset can automatically answer for 10 seconds for hands-free communication. With the auto answer function, you can answer the call without taking your hands off the handlebars or fumbling for your phone, making answering calls safer and more convenient. Simply press the voice control button on the helmet headset, and you can easily call your voice assistant or Siri to perform various tasks without distracting your attention from the road.【Noise Reduction and Hi-Fi Stereo Quality】Adopting advanced CVC noise reduction technology and Bluetooth, the output and input of the S2 Bluetooth headset are provided with powerful noise reduction and Hi-Fi stereo quality, and you can hear clear music and communication at high speed.