Advanced BT5.1 ChipAdopts advanced BT5.1 chip to achieve stable and low latency, noise-free and power-saving functions.Multi-functionCan connect 2 mobile phones at the same time, support voice assistant, answer calls, play music, and the automatic answering function can easily reject calls.[Long battery life] The headset has a built-in 1200mah battery, which provides 30 hours of working time and 180 hours of standby time, ensuring long-term use by riders.Noise reduction technologyEnjoy clear voice calls through intelligent noise reduction processing and ultra-high sensitivity anti-noise silicone microphone and windproof microphone cover.[Advanced design] The AB shell, rubber oil processing and internal silicone inlay make the headset waterproof and sun-proof, suitable for all types of helmets, and troublesome to install.