Brushless, permanent magnetic rotor, maintenance-free.
Stator and circuit board sealed by epoxy resin.
USB interface, DC 5V input.
Enclosed with static sealing, not dynamic, which can avoid leaking problems.
Small size, high efficiency, low consumption, low noise (less than 35db).
This is a compact size submersible water pump(none self-prime). It's built by a brushless motor providing smooth and quiet operation than a non-brushless water pump. Features: Brushless, permanent magnetic rotor, maintenance-free. Stator and circuit board sealed by epoxy resin. USB interface, DC 5V input. Enclosed with static sealing, not dynamic, which can avoid leaking problems. Small size, high efficiency, low consumption, low noise (less than 35db). Wide temperature resistance range from 0°C to 100°C. Used in Aquarium, car cooling, humidifier, air conditioner, other cooling and circulation systems. Note: 1. It can be used in the water or other liquids(without particles and impurities); NOT for acid and alkali solution. 2. DO NOT dry burn the pump, otherwise it would be damaged; 3. PLEASE let the pump vibrate several times in the water to exhaust air, then it can work normally. Specifications: Color: Black Pump material: ABS Temperature resistance range: 0 ~ 100°C Condition of use: Continuously Power consumption: 2.3W Rated voltage: USB DC 5V  Max. flow rate: 220L/H Max. lift: 250cm / 8.2ft Noise: Less than 35dB Outer diameter of inlet / outlet: 9mm / 0.35in Inner diameter of inlet / outlet: 6mm / 0.24in Waterproof class: IP68 Product size: 56 * 52 * 47mm / 2.2 * 2 * 1.8in  Product weight: 83g / 2.94oz Package size: 6.2 * 6.2 * 4cm / 2.44 * 2.44 * 1.57in Package weight: 93g / 3.28oz Package List: 1 * Brushless DC Pump 1 * Adapter Plate