Features 1、This thermoelectric cooler uses high‑end refrigeration module which has high power and good durability 2、Cooling block has large area that can contact more water for quick cooling 3、Four hollow copper pipes with refrigerant inside would deliver heat fast for higher cooling efficiency 4、120W is suitable for 30L fish tanks and 180W is suitable for 40L fish tank 5、It is energy saving and beneficial to the growth and reproduction of ornamental fish Specification Features: This thermoelectric cooler uses high-end refrigeration module which has high power and good durability. Cooling block has large area that can contact more water for quick cooling. Four hollow copper pipes with refrigerant inside would deliver heat fast for higher cooling efficiency. 120W is suitable for 30L fish tanks and 180W is suitable for 40L fish tank. It is energy saving and beneficial to the growth and reproduction of ornamental fish. Specifications: Current: 10A(120W), 15A(180W) Water Inlet/Outlet Outer Diameter: 8mm/0.31" Size: 143*96*162mm/5.62*3.77*6.37" Package Includes: 1 x Thermoelectric Cooler Package List 1 x Thermoelectric Cooler Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.