[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. your safety anytime, anywhere. [UNIVERSAL SILICONE CORD FIXATION] - Silicone elastic band allows the warning light to be bound to anything, such as backpacks, helmets, dog collars, scooters, strollers, bike headlights or taillights, etc. The helmet light is easy to install and securely tied in place, never slipping off. [3 Lighting Modes] - The warning light provides instant illumination with steady/flash/strobe at the touch of a button. Simple and safe operation. A must-have device for your activities. [Waterproof & Shockproof] - The warning light has a waterproof housing design. It is a convenient low maintenance item, perfect for all conditions when you run, bike, jog, hike, camp, walk your dog, etc. [] - The warning light is powered by two coin cell batteries that provide up to 100 hours of powerful brightness. You can reuse the security light by replacing the batteries inside (CR2032) Colour:As Shown Material:Silicone,ABS Package Contents: 6 * Backpack Light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.