Suitable for most hats, this complete combination provides easy illumination; This LED lamp offers 3 adjustable brightness levels: high, medium, and low, allowing you to select the most appropriate setting for use in the dark; USB charging: the flashlight features a standard USB charging port, compatible with any standard USB power source; Can be charged using a car charger, computer, wall outlet, or portable power bank; 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 the hat fabric according to the light's shape; Includes leather tabs for sewing onto your hat to securely attach the light; This set is ideal for various hands-free lighting needs; Simple to operate and clean: press the button on the center of the LED light to adjust brightness; to clean, gently press and remove the headlight cap, then wash the beanie hat as usual; Suitable for multiple activities: this rechargeable LED light is ideal for walking, camping, hunting, snow shoveling, fishing, cycling, running, hiking, barbecuing, car maintenance, and more; Hands-free design makes it practical for a wide range of uses; Color: black; Package Contents: 4 x rechargeable LED lights; Only the items listed are included; other accessories are not included; Note: Lighting and display differences may cause slight color variations between the image and the actual item; Measurement may vary by +/- 1-3 cm