Kit with SR 500 fan unit and protective helmet with visor SR 580. Contains, SR 500 fan unit, SR 580 protective helmet with visor, battery STD, battery charger SR 513, belt SR 508, 2 pcs SR 510 P3 R particle filter, 2 pcs filter adapters, 10 pcs SR 221 prefilter, 2 pcs prefilter holder, flow meter, plug kit, cleaning tissue and user manuals.