Thermaltake Rhythm CL-W0042 Home Theater DVD Style External Liquid Cooling System Extended aluminum radiator increases surface area to allow high heat dissipation 12-volt DC liquid pump provides intense yet quiet and smooth liquid circulation Two ultra-quiet 120mm fans dissipate heat more efficiently and silently High-capacity liquid tank with 10,000 hours of maintenance-free from liquid refilling Automatic non-spill valves, robust material one hand operation