NiteRider Firestorm HID Headlight

"With up to 4 hours of super bright HID runtime. This light system includes both helmet and handlebar mounts with appropriate length cables for each, so you have the right light for any situation. The light NiMH battery is small enough to fit in a jersey pocket, hydration pack or mount to your frame. Also included is the fully automatic 2.5 hr charger. Wt.: 800g."