This is a 4.7 Farad capacitor. This small cap can be charged up and then slowly dissapated running an entire system for hours. Combine two in series for 2.35F/5.4V. Do not over voltage or reverse polarize these capacitors.
It can be used in Electric toys, wireless modems, motor drivers, portable terminals, duplicators (rapid heating), car audios, remote controllers (self-electric charging), AMR(Automatic Meter Reading), uninterruptible power supply(UPS), electric valves, actuators, wind velocity(pitch control), alarm/security devices.