Feature: 1. SAFE AND POWER SAVING: Aquarium water pump, power saving and energy saving, off water disconnection protection, the internal use of ceramic shaft center, freshwater and seawater universal. 2. DIGITAL DISPLAY DESIGN: Submersible aquarium pump with external controller, high definition LED display, display real real time power, a glance at the power, a key to operate, more convenient. 3. ADJUSTABLE FLOW: This submersible fish tank water pump supports 12 gears flow adjustment, cleaner filtration, meet the use of different sizes of fish tanks. 4. VARIABLE FREQUENCY: A real variable frequency water pump, sine wave technology, turbocharging, strong power, long lasting and durable, the flow does not decay. 5. QUIET AND APPLICATION: 25DB silent operation, with four corner cushion base, more quiet. Different caliber interface to meet most of the water pipe fittings, suitable for fish tanks, fish pond, fountain pools, aquarium bottom filtration tanks, etc. 6. MULTI MODE: Normal, feeding and wave making modes, 12 gears to adjust different power and water flow, 12 gears for wave making mode, equivalent to 12 pumps switching with different power and water flow. Specification: Item Type: Submersible Aquarium Pump Material: ABS Use: Variable Frequency Fish Tank Filter Pump Product Power: 40W Voltage: 220-240V Flow: 6000L/H Lift: Approx. 5m/16.4ft Interface Size: Outer Diameter 25mm / 1in, Outer Diameter 32mm / 1.3in, Outer Diameter 40mm / 1.6in, Outer Diameter 40mm / 1.6in. Package List: 1 x Submersible Aquarium Pump1 x Instruction Manual 4 x Nozzle 1 x Fixed Nut Ring 1 x Connecting Screw Ring 4 x Suction Cup 1 x Controller Fixing Buckle 1 x Washer Note: Manual measurement, please allow some errors.