The Blackburn System X4 light is a superb choice for a primary light while on the roads commuting or riding, or as a second light while mountain biking. The redesigned Li-lon battery pack lasts up to 4 hours at 100% intensity and stays at the full brightness for all of it! The Blackburn System X4 can be mounted to your handlebars (no helmet mount as of yet) and is powered by a Luxeon lamp at 85 lumens.
Features: The small battery, lightweight design, and ease of mounting makes this a great light for commuting or whenever you need some extra light!
4 hour burntime at 100% intensity
6 hour burntime at 30% intensity
Low battery indicator
Weight: 3.0 lbs.