Audio-Technica AT637 Electronic Stylus Cleaner

Anyone remembers these old ones?
I found mine yesterday (at least 25 years old) and it works with a AA battery.
Are these any good?
Oscillating high density brush thoroughly cleans all cartridges. No more original cleaning fluid. Basically it does the brushing for you but through gentle vibrations.
Clean the stylus for about 20 seconds.