HITOP Single Outlet Aquarium Air Pump, Fish Tank Aerator with Accessories, Quiet Oxygen Pump for Small Tank up to 15gallon (Sing

Specification AC: 110-120V, 60Hz Power: 2Watt Pressure: 18Kpa Flow: 1.5L/min Package including: Single outlet aquarium air pump x 1 Air tube(4.9ft) x 1 Air stone x 1 Check valve x 1(Can be used when the air pump is placed below the surface of the fish tank) Regulating valve x 1(installed on the air tube to adjust the air volume) Note:There is no adjusting knob on the air pump, but we presented a regulating valve, which can be installed on the air tube to adjust the air volume.