ENHANCE NIGHTLUX BLM Bike Light Handlebar Mount with Water Resistant Exterior and Four Light Settings - Works with GMC , Vilano , Schwinn and More Road Bikes **Includes Accessory Bag** Easy tool-free setup. The BLM fits handlebars up to 40 mm in diameter including GMC , Merax , Vilano , Schwinn , Diamondback , Kestrel , SE Bikes , Huffy and more road bikes The NIGHTLUX BLM keeps bike safety in mind and is not a cheap imitator - Includes CREE LED lights and gives you a 180 degree field of view. Powered by 3 AAA batteries (not included) with 2 brightness settings and 2 flash settings IPX4 water resistant rating keeps the light shining strong in wet weather 3 YEAR MANUFACTURER'S WARRANTY