Features: Compact size and lightweight, small space occupation and convenient to carry; with back holes for wall mounting and better heat dissipation. Single knob design, easy to control and calculate the flow, by stepless speed regulation. Light degree of the intelligent indicator shows the flow rate, clear and considerable. Pump Head is simple to assemble, can easily be replaced, maintained or changed the direction of pump head. Three-wheel structure features moderate pulsation, accurate flow rate, low noise, low loss and long using life. Three types of delivery hoses are supported (1*3mm/2*4mm/3*5mm) for different needs of flow, an extra extension hose of 1m is included in the package. Specifications: : GROTHEN Material: Engineering Plastics Color: Green Pump Head Quantity: 1 Tube Size (ID*OD): 2mm * 4mm Food Grade Silicone Tube Tube Chemical Resistance: 10% Acid / Alkali Tube Life Time: More than 350h Flow Rate: 10-33ml/min; 22-85ml/min; 40-160ml/min Free Extension Tube Length (Outside the pump head): 1 meter Input Voltage: 100-240V AC Output Voltage: 24V/1A DC Motor: 12V Speed Control Type: Stepless Speed Control Item Size: 13.2 * 8.1 * 5.2cm / 5.2 * 3.2 * 2in Item Weight: 189g / 6.67oz Package Size: 18 * 15.6 * 10.8cm / 7.1 * 6.14 * 4.25in Package Weight: 434g / 15.3oz Package List: 1 * Peristaltic Pump 1 * Extra Extension Hose (1m) 1 * Charge Adapter