4. The product uses a 1200mAh rechargeable polymer battery, with a talk time of 30 hours and a standby time of 600 hours; it supports viewing the headset display on a smartphone, anytime, anywhere; it can also be used while listening, so that charging and discharging can be achieved.2. It uses intelligent noise reduction, ultra-high sensitivity anti-noise silicon microphone and wind noise-proof microphone cover to make calls smoother.3. The product can connect two mobile phones at the same time to control the basic functions of the mobile phone (answering calls, playing music); automatically answer incoming calls, if you dont answer, you can short press the button to reject or hang up, and then redial the previous number.1. It uses Bluetooth 5.0 chip, which is more power-saving, low latency, no noise, and stable high-fidelity audio transmission.5. The product adopts IP67 high-level waterproof design, which is not affected even when used in rainy days. Suitable for full helmets, helmets, half helmets, and retro helmets.