Motorcycle Helmet Intercom Communication System:This motorcycle headset supports maximum of 400M intercom distance which allows 2 riders intercom. E1 allows you to make hands-free calls, enjoy the use of streaming music, listen to GPS voice guidance convenient intercom and Voice-activated digital assistant access, allowing you to enjoy the ride safely and happily. | Advanced CVC Noise cancellation technology to reduce background noise,ensure that you can still let the other party hear your voice clearly when driving at high speed. | Longlast Capacity Motorcyle Headset: The motorcycle helmet headphone provides easy hands-free communications for you while riding,you can listen to music and GPS voice guidance.With 800mah battery capacity,only charge for 2 hours,it will takes 12 hours stream music/talking to teammates before running out of battery. | IPX6 Waterproof Motorcycle Helmet Intercom：If you consider to use in rain/ wet weather, this waterproof motorcycle helmet headset ensures it waterproof in bad weather. Motorbike helmet headset comes with hard mic for modular half-face helmet. | 【After Sale】If you have any questions before purchasing or after receiving , please feel free to contact us via our storefront"→"Ask a question" We will try our best to serve you.