Lanzar OPTICAP60 Optidrive 6 Farad OVAL Hybrid Super Capacitor (Discontinued by Manufacturer) Blue Flash LED with Two Blue Neon Tubes in Front Capacitance: 6,000,000 Micro Farad Working Voltage 21DC, Surge Voltage 24DC E.S.R ( Equivalent Series Resistance) 0.0015 @ 120Hz/ 25  C Capacitance Tolerance  10 %