Features: Micro dc has brush diaphragm pump, gas and liquid, it is based on the volume pump original design. Is powered by the motor rotation, by means of the eccentric wheel motor shaft, drive rubber loop, reciprocating motion, suction and discharge inside the cavity formation action, through the check val ve closed, open, so as to achieve suction and discharge of gas and liquid.It can draw cold water or hot water, which can reach the water flow of 1.3-1.7l /min. A pump that pumps hot water; Large and quiet water flow; Exquisite workmanship and durable structure; Gas-liquid (more suitable for liquids) Specifications: Working Voltage: DC 12V Traffic: 1.3L-1.7L / Min(approx) Size: 9cm(3.54in) ,Wide: 3.5cm(1.38in) Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: (No retail package) 1 Pc x Mini Pump