Capacitor: electrolytic; low ESR; THT; 680uF; 63VDC; Ø

An electrolytic capacitor that is of the THT (Through-Hole Technology) type, meaning it is designed to be soldered through holes on a PCB (Printed Circuit Board). The capacitor capacity is 680 microfarads (uF) and the maximum allowable voltage is 63 volts direct current (VDC). The "Ø" probably refers to the diameter of the capacitor, but the exact size is not specified.
In addition, the capacitor has a low ESR (Equivalent Series Resistance), which means that it can effectively reduce signal resistance and noise that can enter the circuit connected to the capacitor. A low ESR is particularly important when the capacitor is used in high frequency applications such as power supplies.