Product description:Bulb: COBPower: 20WFunction: strong / weak / flashing red and blueBattery: 3 * 18650 USB chargingMaterial: ABS + aluminum alloyPackage Includes: 1 * Multifunctional LED HeadlightDescription: 1. Headlamp and Headlamp: LED headlamps can be used as a flood lamp on the head, illuminating the whole environment. 2. 3 Modes: Short press the power button to switch between the light options: high brightness, low brightness or red and blue flash mode. The best companion for competitions, night work, fishing and other activities where you need light. 3.Outdoor Waterproof Kit: The waterproof headlight works well in rainy or snowy days. The high-quality silicone shell and leak-proof waterproof wiring are the reason for the strong waterproof properties. 4.SUPER LONG WORKING TIME: This LED headlight comes with a large battery case. You should put 3 batteries (Note that the anode and cathode of the battery match the instructions "+" and "-" on the battery case.), which will greatly increase the working time. If you lost one or two of the batteries, this can also work with a single battery. 5. Sturdy and Versatile: With the help of the adjustable headband, this rechargeable headlight can be adjusted to almost any head shape, whether you wear a helmet or not. It's always comfortable and fits well. You can wear it for a long time without feeling uncomfortable.