HOOKS & MAGNETS FOR EASY SETUP: Secure your vehicle inside out. Use the hook to hang the roadside safety discs from the coat hangers or stick the LED road flares to the metal roof, trunk, side, and hood thanks to the strong earth magnets on the back of your LED flares. DURABLE BUILD FOR ALL CONDITIONS: Waterproof and shatterproof, the emergency flares run flawlessly in rain. Every roadside safety disc is durable, with a battery ranging between 5-10 hours depending on usage, pattern mode, and brightness of the road flare. Specifications: Product Name:Warning Light Size: about 87*45 mm Weight :about 130g Material: ABS+PVC Light Source: COB Lifespan of LED: more than 10,000 hours Lighting Modes :Yellow Light Flashing Battery :3*AAA Battery (not included) Pckage Includes: 1 x Warning Light