Ultra-quiet Brushless Submersible Mini Aquarium Water Pump


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  • Brushless pump, permanent magnetic rotor, maintenance-free.
  • Enameled wire coil and circuit board are sealed by epoxy resin.
  • The coil adopts pure copper enameled wire, lower temperature rise and longer life span.
  • Amphibious pump, you can use it in the water or out of the water (follow the installation instruction).
  • USB DC5V input, very convenient for power supply.
  • IP68 waterproof grade, totally submersible in the water.
  • Detachable design, providing convenience for cleaning work.
  • With a filter, avoiding blocking the inlet.
  • 4 rubber suckers on the bottom, can adsorb on the smooth surface and reduce noise and vibration.
  • Small size, high efficiency, low noise.
  • Suitable for aquarium, fountain, car cooling, computer water cooling system and circulation systems.


Model QR50A QR50B
Power 2.4 W 4.8 W
Max Flow Rate 250 L/h 300 L/h
Max Lift 200 cm / 6.56 ft 300 cm / 9.84 ft
Current 480 mA 960 mA
Rated Voltage USB DC 5 V
Noise Less than 35dB Less than 37dB
Lack of Water Protection No Yes
Outer Dia. of Inlet / Outlet 8.5 mm / 0.33 in
Inner Dia. of Inlet/Outlet 6 mm / 0.24 in
Waterproof Class IP68
Material PC + ABS
Max. Liquid Temperature 100 °C
Cable Length 150 cm / 4.92 ft
Product Size 59.5 x 49 x 42 mm / 2.34 x 1.9 x 1.65 in
Product Weight 90 g / 3.18 oz
Package Size 6.5 x 6 x 5.4 cm / 2.56 x 2.36 x 2.12 in
Package Weight 104 g / 3.68 oz




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