... led underwater light W170 2.SST-90 LED 3.Distance:500 meters 4,Max output;2200lumen 5.CE ROHS IIP68 SPECIFICATIONSLED: 1* SST90 LED ... Li-ion battery.* Magnet control Knob switch moving for on/off or brightness mode change : MAX – MID-LOW-BLIKING . * ... at night , Hunting, Fishing, Diving,Camping, Hiking, Exploration, (Mountain / Road) bike, Bus/Car, Railway, Public security, Fire brigades ,Police forces ...