Arena2 is designed for professional users needing brighter illumination than the original ArenaLight. All weather integrated super-efficient solar cell. 1500 lumen LED cluster - 50% brighter than the original ArenaLight. External power port allows the Arena Supercharger solar panel (s) to be added to boost run times. Kit includes remote control and fixings. Adding the optional Supercharger solar panels delivers longer running times for the lights in the winter. Plus it means Arena2 can be used indoors.