DescriptionHpumps 4108 air pump designs with twin outlets to diverse the air flow more equeal in the fish tankFeaturesPizeoelectrical ceramic plate inside,Website:://.heyipump.net, excellent noiseless effectTwin outlets of air flow,making oxygen supply in good balanceSuper noisless , low vibrationProduct Info.Model                       4108                      4108AVol/Freq.                   220V,50HZ                 110V,60HZDimensionsDia               53*24mmDia                53*24mmWeight                      47g                       38gPower                       3.5 watt                  1.5 wattWater Depth                 600mm                     500mm                 Noise                       38db                      33dbTank Volume                 <100L                     <100LPressure                    12kpa /-10%              10kpa /-10%     Flow Rate                   >280 280mm /-10%         >240 240mm /-10%Attachments1pc 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