XECCON Sogn1100 1200 Lumen WATERPROOF Road Commuter & Racing Handlebar & Helmet Bike Light with Samsung Battery BSS&reg; Very Compact and Light Weight Handlebar and helmet Light, only 75g!! Helmet Kit INCLUDED!!! Powerful 1200 Lumen, using 2nd generation Cree XM-L2 LED! WATERPROOF Design, underwater 2 meters!! 5200mAh Samsung battery provides enough power for bike racing! Simple High/Low/Strobe mode, with strobe function to alert motorists!!