Product name: lights Product size:7.4*5.8*1.3cm/2.91*2.28*0.51inch Battery:200mAh Endurance:1-2h Product material: ABS+COB Mode: Strong light, weak light, flashing product features: 1. High brightness: headlights have powerful that can provide high brightness illumination, making them very suitable for use on roads or in low light conditions. 2. Waterproof design: This light has a waterproof structure, which is very suitable for outdoor use and can withstand extreme weather conditions. 3. Multiple modes: This lamp has various modes, including high, low, and flashing modes, allowing the to control the amount of light emitted. 4. Lightweight and Portable: This light weighs only 24 grams, making it incredibly lightweight and easy to carry, making it perfect for commuters and outdoor adventurers. 5. USB charging: The lights can be easily charged using a USB cable, which is very convenient and environmentally friendly. Precautions: 1. As we know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel to contact me we will give you some suggestion, but it is for you reference only. Shipment includes: 1pc/set lights