High Power and High Lift: Maximum lifting height of 6.56 ft with a 25W high-efficiency motor for energy savings. Lifting height refers to the maximum height water can rise when connected to the nozzle (ensure joint is sealed tightly). Flow Control: Adjustable knob allows control of water flow to achieve desired pressure. Maximum flow rate: 400 GPH. Dimensions: 2.3 x 2.8 x 3.2 in. Suction Cup and 5.9 Ft Power Cord: Long power cord enables flexible installation. Four strong suction cups on the base secure the pump in place, allowing vertical or horizontal mounting inside fish tanks. Ultra-Quiet Design and 2 Nozzles: Includes two nozzles (0.51 in and 0.62 in) and a high-quality motor for quiet operation. Threaded connections provide added stability. Impeller shaft made of stainless steel for durability and corrosion resistance. Wide Application: Ideal for water circulation and aeration in aquariums, fountains, spouts, and hydroponic systems.