Micro-Burst double flash 4.6 inch wide x 4 inch tall Vehicle Mini Strobe Light is designed to permanent mount. Unit operates at 12/48V D.C.. Micro-Burst lights are sealed to keep out dirt, moisture and reinforced against shock and vibration. Produces 65 double flashes per minute at 375 cand/sec. U.L. Listed with 3 year manufacturer's warranty.