Cygolite Expilion 170 USB Rechargeable Headlight State-of-the-art Cree LED technology for 170 lumens LED output Compact design with Quick Release Rechargeable Li-Ion battery stick for no cable clutter (130 g) USB rechargeable for convenient charging on the wall outlet or computer 4 light modes: High  Medium -Low -Daylight Flash with run times from 3 ~ 15 hours on a single charge Includes headlight, Li-Ion battery stick, wall charger and handlebar mount