Gemini duo light head lightthis duo light emits a bright 1500 lumens and is one of the most amazing power efficient lights out there this duo light offers unprecedented night visibility with the 15 degree standard optics the duo emits a far throwing beam that is wide enough to light up the entire width of any trail you can pick from 10 different steps between 10 100 brightness and save it with your own three modes at your disposal you can personalise your settings you may even set the brig