Sufficient quantity meets your needs and simplifies installation. Made of ABS plastic and quality LED light, safe and durable, with good weather and water resistance for use in any condition—rain or shine, summer or winter. Bright enough to attract attention and keep you safe. Wide application: These running lights come with a waterproof case, allowing them to be attached or clamped onto belts, pockets, backpacks, any part of your clothes. They can also be mounted on pet collars, helmets, and jogging or walking gear. Easy to carry: No tools required—these strobe running lights are easy to use, install, connect, and fasten. They are the size of a car key and weigh less than one ounce, making them convenient to carry and store. 3 Modes: The clip lights support 3 practical lighting modes—full bright, fast flash, and slow flash. Just press a button to switch modes in real-time. All 3 modes help warn other passengers, drivers, and pedestrians to spot you in the dark or low light. Color: As shown in the picture. Material: ABS. Package Contents: 15 x LED light, 15 x screwdriver, 15 x Nylon Sticker strap. Note: Light shooting and different displays may cause the color of the item to differ slightly from the real thing. Measurement allowed error: +/- 1-3cm.