Describe:color as shownMaterial: silicone+ABS+electronic componentsPower supply battery: 2 CR2032 batteriesNumber of LEDs: 3 LED highlight lights (2835 SMD lights)Product unit weight: about 13.2gLighting mode: key switch control: long light--fast flash--slow flash--offProduct specification: total length 20CM/7.87INCH, circular diameter 3CM/1.18INCH1.Super Bright LED Lights: The warning lights contain high quality LED lights that provide powerful brightness during the day and night. Whether it's a foggy morning or a rainy day, you can easily see. Keep you safe anytime, anywhere.2. Universal Silicone Strap Fixation: Silicone elastic straps allow the warning light to be tied to anything, such as backpacks, helmets, scooters, strollers, bicycle headlights or taillights, etc. The helmet light is easy to install and fastens securely in place, never slipping off.3.3 Lighting Modes: With the touch of a button, the warning light can provide instant lighting with long/fast/slow flashing. Simple and safe operation. Essential equipment for all kinds of activities.4. Waterproof and shockproof: The warning light has a durable waterproof shell design. It's a handy low-maintenance project perfect for running, biking, jogging, hiking, camping, dog walking, and more.5. Durable: The warning light is powered by two coin cells, which can provide up to 100 hours of powerful brightness. You can reuse the safety light (CR2032) by replacing the internal batteryNotes:1. As we all know, different computers display different colors, and the actual color may be slightly different from the picture below.2. If you find it difficult to choose the size, you can contact me at any time, we will give you some suggestions, but only for your reference.3. We can accept orders of mixed items, colors and sizes.This product includes:1 pc light

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