Description: Material: Motorcycle Intercom is made of PP material, which is strong, wear resistant, can be used for a long time, and is not easy to damage.Helmet Bt intercom: Bt Helmet Intercom supports real time communication intercom, automatically answers phone calls, and the helmet adapts more comprehensively. The Bt version is 5.1Applicable scenarios: Helmet Bt Intercom is suitable for stadium referees, cycling, concert schedules, equestrian competitions, mountain climbing, camping, port scheduling, and other scenarios.Multi function: Motorcycle Intercom supports 2 intercom modes, ordinary intercom mode, and private intercom mode. The maximum intercom distance 1500 meters. Strengthen the antenna, noise reduction function, and clear sound transmissions. Multi user intercom system supports up to 6 people to connect. 2 people full duplexWaterproof: Motorcycle Intercom supports IP65 waterproof, anti jet type, no harmful effects of water spray directly in any direction. More in line with your usage needs. Specification: Material: PPIntercom Distance: 500 MetersMaximum Distance Of Phone Bt Connection: 30 MetersWorking Voltages: 3.0v-4.2vTalk Time: 25~30hStandby Time: 600hCharging Time: 2.5hCharger Specification: Dc 5v 1aInterface: Type C InterfaceBattery Capacity: 850mah Size Chart: Single Product Size: 8.8cmx4x2.2cm/3.46inchx1.57inchx0.87inch Package Includes: 1 Motorcycle Intercom1 Charging Cable2 Stickers2 Clips1 Earphone2 Microphones1 Screwdriver Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!