Suitable for most hats, this complete combination provides easy illumination; This LED lamp features 3 adjustable brightness settings: high, medium, and low, allowing you to select the most appropriate brightness level for use in the dark USB charging: the flashlight has a standard USB interface, which can be charged via any standard USB port; It can be charged using a car charger, computer, power bank, or wall outlet; The indicator light turns red during charging and green when fully charged, making it simple and convenient to use Easy to install and replace: if you have an LED knit beanie hat, simply remove the damaged headlight and replace it with this LED headlight; For hats without built-in lights, cut a small opening according to the light's shape; Equipped with leather tabs, which can be sewn onto your hat to securely attach the light; This setup is ideal for hands-free lighting in various work environments Simple to operate and clean: press the button on the center of the LED light to adjust the desired brightness level; for cleaning, gently press and remove the lamp cap, then wash the beanie hat as usual Suitable for many occasions: this rechargeable LED light is ideal for walking, camping, hunting, shoveling snow, fishing, cycling, running, hiking, barbecuing, car maintenance, and more; Its versatile design allows for use in a wide range of scenarios where hands-free lighting is needed Material: plastic Color: black Package Contents: 4 x rechargeable LED lights Only the above package content, other products are not included Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement tolerance: +/- 1-3 cm