Smart Electric 102 Emergency Flasher 42-watt Halogen Smart Alert Bulb with Standard Base Socket, Clear Halogen bulb has an emergency flashing feature that's visible in daylight Flip your light switch twice to activate the emergency signal and alert emergency vehicles or delivery men Features a clear finish and is compatible with standard base sockets Soft Start technology eliminates electrical shock to the filament to last 2-times longer 2-year unconditional guarantee