Cygolite Mitycross 380 Osp Dual High Beam Led System with Palm-Sized Li-Ion Battery with Smart Rapid Charger State-of-the-art Cree LED technology for 380 lumens LED output On-Site Programmable (OSP) Technology - Program your preferred brightness settings directly to the light with the push of the button Cross-Fire technology crosses beams to double viewing area 6 light modes: High  Medium -Low -Flashing -Walking  SOS with run times from 3.5 ~ 17 hours on a single charge Includes headlight,Slim Li-Ion battery, smart charger, handlebar and helmet mount