This indicates the capacity of the capacitor to store electrical charge. In this case, the capacitance is 4700 microfarads (uF), which is a unit of measure for capacitance. Voltage Rating (16V, 25V, 35V, 50V): This specifies the maximum voltage the capacitor can handle without breaking down. The capacitor is designed to be used safely within the given voltage range options, which include 16 volts, 25 volts, 35 volts, and 50 volts.