WindFire CREE LED Front Mount Adjustable Zoom Waterproof Rainproof Bike Head Light with Extenstion Tube Powered by AAA or 18650 Rechargeable Battery, Waterproof Cycling Headlight for Mountain Kids Camping Street Bicycle Safety Black Cree Q5 LED bike head lights set provides both great illumination distance and peripheral vision 2 in one function, can be used as both flashlight and bike light with the provided bicycle holder 3 modes for Flashlight : High light mode/ low light mode / SOS flashing mode It can be powered by 3x AAA batteries or 1x 18650 battery with the extra tube Combination with Taillight, Rear front light for riding, camping and hiking