Bluetooth 5.3 High PerformanceCompared with traditional Bluetooth chips, the Bluetooth 5.3 chip provides users with a more efficient and stable Bluetooth connection experience. It improves transmission speed, reduces latency, expands transmission range, reduces power consumption, and enhances privacy protection and security.Dual Noise Reduction and HD SpeakerAdopts advanced CVC and DSP noise reduction technology, combined with a professional noise reduction microphone, effectively reduces ambient noise, making the sound scene more immersive. It can capture every sound even at high speeds, providing unprecedented clear audio. The 40mm high-fidelity speaker reproduces audio details for vivid and realistic sound effects.IP67 Waterproof and Dustproof and 1800mHA Large Capacity BatteryThis helmet Bluetooth headset uses nano-coating technology, fearless of dust and rain. The structure is tight and sturdy, effectively blocking road dust and rain. 1800mHA large-capacity battery, built-in high-voltage resistant chip, with 3H fast charging function, ultra-long battery life of about 60H.Voice Control and Automatic AnsweringWith intelligent voice assistant function. Just quickly turn the rotary button to the left twice to wake up the voice assistant or Siri function. The helmet Bluetooth headset can automatically answer calls, and the incoming call voice is synchronized with the phone ringtone to automatically answer the call, without manual operation, ensuring riding safety.[Universal compatible headset] Simple and easy to install, including soft microphone and hard microphone, suitable for various types of helmets on the market. You can connect two mobile phones at the same time, freely choose device switching, listen to music, navigate, and answer calls at the same time.