1The LED flashing warning light is shatterproof, crushproof and rainproof. 2 It can provide 9 warning light with SOS rescue and 3LED flashlight. 3 Powered by 3 AAA batteries(not included). 4 Wide application: such as traffic control, as a warning light, as a rescue beacon, and for any other emergencies. 5 The bottom of the product has hook and strong magnetic, it's easy to use in bicycles and cars.