Bike Light Set by MAMMOTH PRECISION TOOLS Brilliant Luminous BIKE LIGHT SET - Bicycle headlight & taillight set. - Headlight Features: Optic Lens; super bright LEDs; 10,000 hour bulb life. Uses 4 AAA batteries (not included). - Taillight Features: Staggered bright red LEDs for maximum rear exposure; 7 modes - steady flicker, flash, directional, reverse directional, rapid pulse & pulse, run time, steady 130 hrs., flashing up to 300 hours. Uses 2 AA batteries (not included).