The new Voyager 4.0 will boldly go where no commuter light has gone before. With a potent Luxeon 1 watt LED emitter churning out 45 darkness-scalding lumens through a sophisticated beam-shaping optical lens, there is plenty of light to see the road or bike path. And unique to Blackburn, two independently controlled amber side LED's provide 180 degrees of feel-good, be-seen visibilty. The emitter uses the same anti-dimming Constant Current Technology as our powerful System X lights, and four AA batteries will provide 4 hours of runtime at full brightness or 10 hours on low. There is also separate flash modes for the side LED's and the main beam.