Moon x power 1800 front light high power unit ideal for off road riding with 4 cree led lightsquick release handlebar and helmet mount includedalso includes a remote switch allows you to scroll through the lighting modes via a button on the handlebar powered by rechargeable lithium ion battery runtimes and lumen output overdrive 15 hrs1800 lumens high 25 hrs1200 lumens standard 35 hrs850 lumens low 8 hrs400 lumens strobe 6 hrs flashing 65 hrssize 56 x 40 x 62mm