1Premium semiconductor cooler with super power and long durability. 2Internal fin design has greater contact area with water for quick heat dissipation. 3The large area cooling block has more contact area with air for good cooling dissipation. 4Refrigeration effect depends on the size of the cooling space, ambient temperature, heat insulation, sealability ,etc. 5Simple structure but good practicability.Features:1. Premium semiconductor cooler with superpower and long durability.2. Internal fin design has greater contactarea with waterfor quickheat dissipation. 3. The large area cooling block has morecontact area with air for good cooling dissipation.4. Refrigeration effect depends on the sizeof the cooling space, ambient temperature, heat insulation, sealability ,etc.5. Simple structure but good practicability.Specification:Condition:100% brand newPower Supply:DC12V 15A (NOT included)Max Power:120WCoolingPower: 80WRedWire: "+"BlackWire: "-"Size: 20*11.5*7.5cm / 7.87*4.53*2.95inWeight: Approx.764g/26.9ozPackagelist:1 *CoolerNote:.Please allow slight error due to manual measurement. Thanks foryour understanding.