G.I. Type Emergency Strobe Light , Flashes 70 Times Per Minute , 1 Mile Visibility, Meets Coast Guard Specs , Shock and Water Resistant , 1 Year Limited Warranty , ISO 9001 Certified 40 Hours on 1 D Cell battery Not Included A multi nPrupose Device, it can be used as an accident warning light, hazard caution, distress beacon or personal safety light. Complete with belt clip and vest pin, it is lightweight and comfortable to wear - and the base magnet keeps it in place on any metal surface. Trucker Camper Hunter Cyclist Boater Hiker Fisherman Jogger Safety Guard Construction