ITEM NAME:DC 4V-6V 150L/H Micro Brushless Submersible Water Pump Motor Cooling Pump+USB 100% brand new and high quality. Features : DC 5V Brushless Water Pump. Use voltage is best not to overpressure Continuous use of working life of 20,000 hours or more No self-priming pump function Can be.DC 5V Brushless Water Pump. Notice: This pump is not self-priming pump, it needs water when you use it. No self-priming pump function. Head: 1.1/m lift. 1 x Water Pump. Shaft position: Horizontal. Speed: 3500.