The seidon 120v is cooler masters new water cooling kit that with the best cp ratio the compact 120mm radiator virtually fits every case thanks to a 120mm pwm fan with a wide rpm range seidon can operate silently or unleash a powerful cooling storm at your command the durable fep tubing provides the advantages of nearly no moisture absorption high thermal stability and high pressure tolerance factory filled with coolant then sealed and pressure tested requires zero maintenance for yea