Suitable for most hats, this complete combination provides easy illumination. The 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 and can be charged using any standard USB source, such as a car charger, computer, wall outlet, or portable power bank. 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 the new LED headlight. For hats without built-in lights, you can cut a small opening to fit the light unit. Equipped with leather tabs, you can sew them onto your hat and securely attach the light. This set is ideal for hands-free lighting in various work environments. Simple to operate and clean: Press the button in the center of the LED light to adjust the desired brightness level. To clean, gently press and remove the headlight cap, then detach the light unit before washing the beanie. Suitable for many occasions: This rechargeable LED flashing light is ideal for walking, camping, hunting, shoveling snow, fishing, cycling, running, hiking, barbecuing, car maintenance, and more. The hands-free design makes it convenient for use in a wide range of situations. Color: Black Material: Plastic Package Contents: 4 x Rechargeable LED lights Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement may vary by +/- 1-3 cm.