BV Bike Light Set, Bicycle LED Headlight and Taillight Set, Quick-Release, Weather Resistant, 1 YEAR WARRANTY, Easy to Install Cycling Safety Flashlight SUPER BRIGHT BIKE LIGHT AND 3 MODES ON EACH LIGHT: You can choose your favorite mode for your ridingSteady, Flashing, and Chasing. Visible to motorist over 1500 feet away. EASY INSTALLATION/TOOL-LESS INSTALLATION: Simply mount the quick-release mounts on the handlebar and the seat post of your bike and attach the lights on them. The lights are removable from the mounts. WEATHER RESISTANT: Rain or shine, summer or winterany weather condition, any timeenjoy enhanced visibility and you will be safe at any time of the day. AAA BATTERIES NEEDED: Each light needs 2 AAA batteries. In other words, you will need 4 AAA batteries for this bicycle light set. 100% SATISFACTION GUARANTEE: This product is covered by BV warranty. We are so confident you will love this product that we offer 30 days Money Back Guarantee with 1 year free replacement warranty!