DescriptionHpumps 4105 basic core item,Website: , mini square-shaped and real noiseless effect , ideal for basic volume tank application.FeaturesAdvanced, slim profile design Ultra-quiet ,Small volume and light weightLow energy consumption Product Info.Model                   4105A           4105Vol/Freq.               110V,60HZ       220V,50HZ Dimensions              62*49*18mm      62*49*18mmWeight                  36g             36gNoise                   33db            33dbPower                   1.5 watt        1.8 wattPressure                10kpa +/-10%    12kpa +/-10%Flow Rate               240mm +/-10%    300mm +/-10%Water Depth             500mm           600mmTank Volume             < 80L           < 80LAttachments1pc of Air Tube       Inner Dia. 4mm                      Outer Dia. 6mm                      Length 1000mm1pc of Air Stone      Dia.25mm1 Power Adapter       Based on actual power supply and electric plug type1 Suction Cup:        Detachable