Night? Not with Cygolite's Centari 1700 OSP. It uses two Cree LED's to unleash a wide beam with lots of throw so you can pick out more depth and details and turn the darkness into day. An astounding 1700 lumens light your way, and run time is 2 to 32 hours depending on which of the 8 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 Centari comes with an external frame mount battery, wall charger, cables, and a helmet and handlebar mount.