BLUETOOTH FUNCTION: The headlight has a bluetooth-compatible function, you don't need to wear headphones, you can also play music, answer calls and listento the radio.HAND WAVE SENSING: This headlight can be operated by waving your hand. In the state of an incoming call, you can answer the call with one wave, hang up the phone with two waves, and turn on or off the light with a wave of the phone case in the light mode.RECHARGEABLE: The headlamp has a built-in 1200 mAh battery, with a maximum lighting life of 4 hours. The lighting time of the headlamp needs to be confirmed according to the actual use of the headlamp. The headlamp uses type-c interface charging, can support computers, plugs and rechargeable batteries for charging, convenient and fast.WATERPROOF AND SWEATPROOF: The headlamp with waterproof design, hidden charging design, no fear of sweat and rain, allowing you to move more freely. And it can be adjusted for tightness, and it is more comfortable to wear without strangulation for a long time.WIDE ANGLE: The headlamp's lighting angle can reach 230, which can achieve super perspective free lighting, and illuminate the dark night in one second.