Visto Cycling Bicycle Combo Set Head and Tail Light with Mounting Kit - Flashing and Steady Cannon Front + Rifle Rear Bike Headlight -Smart-on feature turns on LEDs automatically/21 lumen; bright, white light 3 modes: steady/flashing/S.O.S./180-degree visibility/Requires 3 AAA batteries (included) Batteries provide 60 hr steady, 120 hr flash runtimes Tailight--Slim case with 5 ultra-bright red LEDs/6 light modes: steady/rapid/pulse 1/pulse 2/single/S.O.S Batteries provide 50 hr steady, 100 hr flash runtimes/Seat post mount and backpack clip included