USB charging: the beanie flashlights have standard USB, which can be through any standard USB port; You can use car charger, computer, socket and portable power box to charge; The indicator turn red when charging and green when fully , easy and convenient to use Easy to install and replace: if you have LED knit beanie hat, just remove the broken headlamp and replace with our LED lamp; If your hats are without LED lights, you can cut the hats according to the shape of the light; Equipped with leather traps, you can sew the leather traps on your hat and install the lights; This combination is suitable for anywhere you want work lighting while freeing your hands Suitable for most hats, complete combination for easy illumination in Simple to apply and clean: the button in the middle of LED light to adjust the brightness you want; Before cleaning, gently the headlamp cap to remove the lamp on it, and then you can wash the beanie hat simply Suitable for many occasions: this LED rechargeable flashing light is suitable for different occasions,like walking , camping, hunting, shoveling snow, fishing, cycling, running, hiking, barbecue, car maintenance, etc.; Easy to match, the hands free flashlight can be applied in a of occasions