Serfas True 1000 Headlight (Black, One) Produces over 1000 "True" lumens of night riding pleasure! Over 3 hours of burn time in Overdrive mode (1000 lumens) and up to 21 hours in low mode (175 lumen mode) Comes with Smart Charger and Extra Long Cable Extension Includes Handlebar and Helmet Mounting Systems Weighs just 480 grams with battery and bracket, additional Li-Ion Battery available for purchase