1、CERAMIC SHAFT CENTER: Aquarium submersible pump has an internal ceramic shaft design and is universal for freshwater and saltwater. Energy saving frequency conversion water pump, power outage away from water protection. 2、EXTERNAL CONTROL AI DIGITAL DISPLAY: Fish tank water pump adopts external control AI digital display, displaying real power, real time power, not false labeling power. External controller, high definition LED display, a glance at the power, a key operation. 3、12 SPEED FLOW RATE ADJUSTMENT: Flow rate 12 stage adjustment, cleaner filtration, to meet the use of different sizes of fish tanks. Sine wave technology, turbocharging, strong power, durable, non decaying flow. 4、SILENT OPERATION: Quiet submersible water pump is designed with four corner cushion base to further enhance the quiet effect. More silent operation, 25DB quiet life. 5、DIFFERENT CALIBER INTERFACE: Different caliber ports to meet most of the plumbing fittings, suitable for fish ponds, fish tanks, fish ponds, fountain pools, aquarium bottom filtration tanks and so on. 6、MODES: Normal mode, feeding mode, wave making mode, 12 gears to adjust different power and water flow, 12 wave making modes, equivalent to 12 different power different water flow pumps to switch. Item Type: Fish Tank Water Pump Material: ABS Use: Inverter Fish Tank Filter Pump Product Power: 20W Flow Rate: 3000L/H Lift: 3.5m / 11.48ft Interface Size: OD: Approx. 22mm / 0.87in, OD: Approx. 25mm / 0.98in 1 x Fish Tank Water Pump 1 x Instruction Manual 2 x Connector 4 x Suction Cup 1 x Controller Fixing Buckle 1 x Washer