LED Emergency Strobe Lamp Traffic Lights Dual Mode Steady On Long Life Lamp Dual mode, steady on Magnetic feature built-into the back for quick attachments Long life rapid firing LED's that are easy on battery life with over 70 hours of run time in Flash Mode Provides a portable super bright highly visible LED flashing safety light for motorists, construction, fire, rescue, farmers and outdoor sports LED Strobe light are waterproof, skid proof , recommended and tested by author Lauren Fix: Guide to Loving Your Car or Motorcycle