This is a brand new, factory sealed Legacy Blue Diamond Series 3.0 farad digital power capacitor which retails for $129.99 plus tax. This capacitor stores a reservoir of current, while offering super-low internal resistance allowing it to deliver current exactly when your amps, subs, and speakers need it most. It installs in-line between your battery and amplifier, delivering that extra power your amp needs to maintain consistent voltage during peak demand. No matter how quickly your amplifier needs current or how quick this capacitor is forced to discharge, it recharges instantly ensuring that your mobile audio system is on point at all times. This capacitor is rated at 20/24 volts and features a red LED digital display as well as bold exterior finishing for an overall better installation result. Also included is a charge bulb and clear mounting brackets with hardware. We are an authorized Legacy dealer. Complete with a full warranty and our exclusive 30 day money back guarantee.