Features:1. Air cooling device, it is not used tocool the water but for heat dissipation by means of water circulation.2. Can be used in small space cooling, pet airconditioner, learning the principle of semiconductor refrigeration and more.3. Refrigeration effect depends on the size of the cooling space,ambient temperature, heat insulation, sealability, etc.4. With strong resistance to lowtemperature, durable with long service life.5. Simple structure but good practicability.Specification:Condition:100% brand newRedWire: "+"BlackWire: "-"Optional Type4 chip cooler6 chip coolerPower SupplyDC 12V 24ADC 12V 36APower280W420WSize12*6.6*9.5cm / 4.72*2.60*3.74in16*6.6*9.5cm / 6.30*2.60*3.74inWeight611g/21.5oz841g/29.6ozPackagelist:1 *CoolerNote:1. Package only includes the cooler, other accessories are not included.2. Do not plug in power without water circulation for heat dissipation.3. Please allow slight error due to manual measurement. Thanks foryour understanding..