Suitable for most hats, this complete combination provides easy illumination for daily use. The LED lamp features 3 adjustable brightness settings: high, medium, and low, allowing you to select the most appropriate level for improved visibility in the dark. USB charging: The flashlight is equipped with a standard USB port and can be charged via any USB power source, including car chargers, computers, wall outlets, and portable power banks. The indicator light turns red during charging and green when fully charged, making it convenient and user-friendly. Easy to install and replace: If you have an LED knit beanie hat, simply remove the damaged headlight and replace it with this LED light. For hats without built-in lights, you can cut a small opening to fit the light. The package includes leather straps that can be sewn onto your hat for secure installation. This setup is ideal for hands-free lighting in various applications. Simple to operate and clean: Press the center button on the LED light to adjust the desired brightness level. Before washing the beanie, gently press and remove the light unit, then clean the hat as usual. Versatile use: This rechargeable LED light is suitable for a wide range of activities such as walking dogs, camping, hunting, shoveling snow, fishing, cycling, running, hiking, barbecuing, and car maintenance. Its hands-free design makes it practical for many everyday situations. Material: Plastic Color: Black Package Contents: 4 x Rechargeable LED Lights Note: The package includes only the items listed above. Other accessories shown are not included. Note: Slight color variations may occur due to lighting and monitor display differences. Measurement error allowed is +/- 1-3 cm.