If your commute or midnight trail-nanigans warrant a long-lasting, ultra-bright LED headlight, have a look at the Cygolite Expilion 680 cycling headlight. At 680 lumens, you can pretty much blind oncoming traffic, but since you have 8 modes, you can tone it down around town and save the pyro show for when you are bombing down a deep forest single track on an after-dark session. For all its muscle, Expilion 680 weighs only 140g, and its hi powered lithium-ion battery holds a charge for a ridiculously long time.
Features 8 Lighting Modes: (5 brightness and 3 special) Medium, High, Boost, Low, 2-in-1 SteadyPulse, Day Flash, Walk, and SOS
2-in-1 SteadyPulse illumination combines steady brightness to see by and an alerting flash to be seen
Smart charging via USB port and wall outlet
Quick-release Li-ion battery stick is easy to swap-on-the-fly
Item includes headlight unit, battery stick, USB wall charger, USB charge cable and handlebar mount