Planet Bike 3042 Spok LED Micro Headlight Made using sustainable methods Made using high quality materials Tested to ensure quality and durability Planet Bike Spok LED Micro Headlight Spok Headlights fit bars, seatpost, headtubes and helmets and its got a Keychain hole Nylon hook and loop adjustable strap (Vel-Cro) New Nichia eXtreme 2.0 LED is 4x brighter than its predecessor It features BE SAFE - BE SEEN !