Car audio capacitor for vehicle upgrade with voltage meter1、Usage: Used to provide instantaneous power on demand to feed your power hungry amplifiers and stabilize this voltage, so your system performs at its peak, strong finishing for a better installation effect. 2、Digital Voltage Display: The car audio system capacitor is especially designed with digital voltage display to inform you of system status and performance, convenient for using. 3、Essential Accessory: 2 farad digital power capacitor can meet the extra demand placed by a high demand audio setup on your car's electrical system, delivering a sound enjoyment. 4、Professional Capacitor: The minimum ESR of the digital power capacitor is less than 0.0016OHM, and the capacitance is approximate 5% with 20 to 24V volt surge. 5、Practical and Functional: Car audio capacitor with professional manufacturing for exquisite workmanship, stable performance and high reliability, durable and long lasting.