Packed with more power and technology than meets the eye, the Cygolite Dice HL 150 fires up the night with an incredible 150 lumens, and stands out in broad daylight with its intense lightning-like flashes. It even senses day and night, automatically switching to the optimal flash mode. Engineered for road cyclists, it uses a low profile, flexible mount that's designed for most handlebars including aero bars.Eight lighting modes for use on mountains, roads, and commutingBattery: 1, 702322 Lithium Polymer, 3.7(V), 1.11(Wh), 6g, IncludedFeatures Enhanced Cycling Optics that cast an extra wide and long range beam compared to conventional lighting opticsLow battery indicator and light memory mode saves the mode the rider is using when the light is turned offWater-resistant design for all riding conditionsItem SpecificationsBatteryLi IonColorBlackLumens Front150Recharge TypeUSBWeight30 CygoLite Dice HL Headlight Headlight, Rechargeable UPC: 745025075090