FoxFire 6005080 Hard Hat Light Kit, 4 LEDs, Red Kit includes 1 SL-34 safety lite with clip, 1 custom mounting bracket, 1 surface cleaner and 2 "AAA" batteries Lite contains4 super-bright LED's 3 Light patterns (fast flash, pulse flash,or constant on) Visible up to 1/2 mile Patented (US Patent No. 6,497,493 B1)