Cygolite Expilion 400 Usb Rechargeable Headlight with Quick Release Li-Ion Battery Stick and Wall Charger State-of-the-art Cree XPG LED technology for 400 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 7 light modes: High  Medium -Low -Boost -Flashing -Walking  SOS with run times from 2 ~ 24 hours on a single charge Includes headlight, Li-Ion battery stick, wall charger, handlebar and helmet mounts