WIRELESS BLUETOOTH V5.3 CONNECTION TECHNOLOGY: Motorcycle bluetooth intercom headset adopts Bluetooth V5.3 to ensure fast and stable connection. Support 8 people to talk at the same time, the intercom distance can reach 1000 meters, when disconnected, it can automatically reconnect within the intercom distance to ensure stable calls. Extra long use time: 1000Mah battery capacity, 9 hours of intercom, 12 hours of music playback, standby time up to 122 hours, battery efficiency up to 90%. Can be used for long distance traveling. Versatility and ease of use: can be connected to two Bluetooth devices at the same time, support cell phone incoming calls automatically answer, hang up and voice dialing, support music free switching. DSP noise cancellation, waterproof and dustproof up to IPX6: Adopting DSP noise cancellation technology, the sound quality is better, reducing noise and improving the experience. Waterproof and dustproof up to IPX6, can be worn even in rainy days. Multi-scenario use: solo riding, motorcycle team riding, racing, long-distance traveling. Bluetooth Version V5.3 Mode Protocol HF, A2DP, AVRCP Battery Type Lithium Ion Battery Battery Capacity 1000mah Temperature range -10~60C Charging time Approx. 2.5 hours (TYPE-C) Charging Voltage 5V Supply Voltage VDD3.7V Standby time Approx. 144 hours Frequency Range 2.402GHZ-2.480GHZ Walkie Talkie Wireless Transmission Range 500M~1000M Music playback time 12 hours Talking time 9 hours Mixing time 8 hours Charging current 850MA