Features: Suitable for small space cooling, semiconductor refrigeration learning theory, research solutions developed cooling equipment planning. Air cooling device, not used to cool the water, use water to dissipate heat, and eventually the water is hot, not cold. This kit is a finished product that does not need to be assembled Stable work and low noise, no refrigerant required. Suitable for 20L space cooling, air temperature can be cooled to 5-8 degrees than normal. Specifications: Maximum power: 288W (15.4v) Maximum current: 24A Rated voltage: DC 12V Rated current: 17A Refrigeration power: 170W Product size: 180* 65 * 62mm/7.09*2.56*2.44 Package Included: 1 x Thermoelectric Cooler(have assembled ) This cooler kit included: 4 x 40*40mm fan 1 x Cooling block 1x Water Block 3 sets x fixtures 1 set x screw(6 pcs screws + fan screws 16pcs), 4 x TEC1-12706 Note: 1. That we sell is finished product,don't need to assemble. 2. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .