Fits most hats, complete combination for easy lighting in the dark; This LED light has 3 adjustable brightness levels, namely high, medium and low light modes; you can choose the most suitable brightness for seeing in the dark. USB charging: the flashlights have standard USB, which can be charged via any standard USB port; you can use car charger, computer, socket and power bank to charge; The indicator turns red when charging and green when fully charged, simple and convenient to use. Easy to install and replace: if you have an LED knitted hat, just remove the broken headlamp and replace it with an LED headlamp; If your hats do not have LED lights, you can cut the hats according to the shape of the lamp; Equipped with leather fasteners, you can sew leather fasteners on your hat and install the lights; This combination is suitable for any place where you need lighting while keeping your hands free. Easy to apply and clean: press the button in the middle of the LED light to adjust the brightness you need; for cleaning, gently press the cap of the headlamp to remove the lamp on it, and then you can wash the cap easily. Suitable for many occasions: this LED rechargeable flashing light is suitable for various occasions, such as walking, camping, hunting, snow shoveling, fishing, cycling, running, hiking, barbecue, car maintenance, etc.; Easy to match, the hands-free flashlight can be used in a variety of occasions. Material: plastic Color: black Package Contents: 4 * Rechargeable LED Lights Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.