800w solarpro flood is most powerful FLOOD lamp we have with a coverage of 600sf special for ranches, big buildings and construction sites. this flood is powered by solar 100% with a 5v/55w solar panel . 3.2v/48ah lithium batteries. and the most seller LED chip on market asia Nichia japan smd . flood warranty is 2yrs. estimated life time is 5/6yrs.