Ride safer with the JETBeam JET 3 ST CYCLER 425 Lumen Bike Light. The JETBeam JET 3 ST CYCLER Bike Light is specially designed for cycling, camp, hiking, mountaineering and other outdoor activities. Featuring the latest CREE XM-L emitter for a massive output of 425 lumens and built-in over-discharge protection circuit that enables the light using two CR123 cells or one 18650 Li-ion rechargeable battery, the JETBeam 425 Lumen Bike Light is one of the best in the business. With a simple tightening or loosening of the head, this fantastic Flashlight from JETBeam can switch between Cycling mode or Outdoor mode, with each mode featuring various signals and functionality purpose-designed for the task at hand. The JETBeam ST CYCLER Bike Flashlight's finely customized flood-type reflector produces a broad and uniform spill beam which is ideal for either cycling or lighting up the path ahead when hiking, camping or mountaineering. Don't ride at night with out it.