CygoLite ExpiliOn 300 USB Li-on Rechargable Headlight State-of-the-art Cree XPG LED for 300 lumens LED output Compact design with Quick Release Rechargeable Li-Ion battery stick to swap on-the-fly (system weight 130 g) USB rechargeable for convenient charging on the wall outlet or computer 4 light modes: Medium  High - Low - Flashing with run times from 2 ~ 9:30 hours on a single charge Includes headlight, Li-Ion battery stick, wall charger, USB charging cable, and handlebar mount