This is a size submersible pump. It's equipped with a brushless motor providing smooth and quiet operation than a non-brushless pump.

Features:
Brushless pump, permanent rotor, maintenance-free.
Enameled wire coil and circuit board are by epoxy resin.
The coil adopts pure enameled wire, lower rise and longer span. 
Amphibious pump, you can use it in the or out of (follow the installation instruction).
USB DC5V input, very convenient for power .
Adjustment with indicators, and memory function when off.
Lack of conservation.
IP68 waterproof grade, totally submersible in the .
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 .
Small size, high efficiency, low noise.
Suitable for aquarium, fountain, car cooling, cooling system and circulation systems.

Note:
1. Please check the voltage and of the pump before on. 
2. Please cut off the before you install/put in/take away the pump from the ; otherwise, the pump can't due to the in it.

3. It can be used in the or other liquids(without particles and impurities); NOT for viscous and acid-base liquids.
4. DO NOT dry burn the pump, otherwise it would be damaged;
5. Switch on-off the repeatedly for several times to eliminate the in the pump impeller and the .

Specifications:
Color: Black
Pump material: PC + ABS
Rated Voltage: USB DC5V 
Max. : 4.8W
Max. Current: 960mA
Max. Quantity: 300L/H
Max. Lift: 300cm / 9.84ft
Noise: Less than 37dB
Lack of conservation: Yes
Outer Dia. of Inlet/: 8.5mm / 0.33in
Inner Dia. of Inlet/: 6mm / 0.24in
Waterproof Class: IP68
Max. : 60°C
Cable Length: 150cm / 59in
Product Size: 59.5 * 49 * 42mm / 2.34 * 1.9 * 1.65in 
Product Weight: 94g / 3.32oz
Package Size: 6.5 * 6 * 5.4cm / 2.56 * 2.36 * 2.12in
Package Weight: 104g / 3.67oz

Package List: H20632
1 * DC5V Brushless Pump
1 * Filter
1 * User Manual(English)