Pro Ice Series Brand New Factory Sealed One year warranty by This listing is for a Mobile Spec (model ms-5hcapd )5.0 Farad Hexagon Hybrid Super Capacitor With Blue Digital Voltage Display, Blue Flash LED, Blue Neon Ring a) 3 digits hi-end blue light display DC voltage meter that can measure 0.1 DCV range, b) Reverse pole connecting PCB buzz warning function. If the capacitor is connected incorrectly by reversing hte positive and negative wires during the installataion process the PCB will issue a 45 second noise to warn you. c) Hi-end platinum plated 100% brass solid parts and chrome plated metal cover d) Over voltage limit and low battery voltage limit warning. When the system voltage peeks over 17DCV or LESS than 10DCV. The buzzer on the PCB will issue an audible noise warning. e) Multibple small capacitance capacitor linked to provide the lowest inner E.S.R. and largest moment discharge power.