Set the darkness ablaze with Cygolite's TridenX 1300 OSP. It uses three Cree LED's to unleash a wide beam with lots of throw so you can pick out more depth and details. A whopping 1300 lumens light your way, and run time is 1:40 to 16 hours depending on which of the eight modes you select. It has boost, high, medium, and low modes as well as flashing and walking modes. The unique SteadyPulse mode alerts night time motorists with pulses of light while still constantly lighting your path. And, the OSP technology lets you fine tune brightness and flash speeds without external hardware or software. The TridenX comes with an external stem mount battery, wall charger, cables, and a helmet and handlebar mount.