The cateye volt 1600 is one of the brightest lights that cateye offer pumping out an impressive 1600 lumens the volt 1600 is perfect for those late night trail riders simply brilliant simple is spread all over this light keeping its functions to a few pushes of a button simply hold the button to switch on and hold to turn off to scroll through the light different modes just press the button once and for a quick step through to your highest 1600 lumen setting simply double tap the button y