This product can reduce the fatigue caused by long time using eyes or eye damage caused by strong light stimulation. It is of extremely low self-discharge rate and can be left unused for a longer time. One benefit is that there are so many accessories that one can have with this product such as container padlocks and container lockboxes (which add additional security), container lighting, container ramps, moisture traps, etc. It is of extremely low self-discharge rate and can be left unused for a longer time.