LOGISYS Computer CLK12RD2 12 DUAL RED COLD CATHODE KIT Specifications: Tube diameter: 3.0mm Input voltage of inverter: 12v Output voltage of inverter: 680v Current draw: 5.0mAv Brightness: 28,000~30,000 cd/m Lifetime: 30,000 hours Parts: 90 days limited Labor: 90 days limited