Must have in case of car, truck, boat, and bicycle emergencies. You don't want to be in an emergency situation without these LED flares. Great gift for friends and family to keep in their trunk! Hook design make it easier to hang wherever you want. Strong Magnetized base makes the emergency beacons stick to cars firmly. Water resistant, shockproof, crush proof. Savior for car breaking down or stranded on a dark, it can also as a warning to other drivers. Different flashing modes suitable for different emergency situations.