Is a conical burr grinder better than a blade grinder?

Yes for consistency. Conical burrs crush beans to a more even size, so extraction is more predictable. Blade grinders chop unevenly and leave fine dust that clogs pour-over filters.

What does 450 RPM mean for the coffee?

It is a slow grind speed. Lower RPM means less friction heat reaching the beans, which helps preserve aroma compounds. It also tends to reduce static cling compared with fast grinders.

Can it grind fine enough for espresso?

The adjustable grinding feature covers a wide range, and conical burr grinders of this type typically reach espresso-fine. Dialing in espresso still takes small adjustments and fresh beans.

Does it work for French press?

A conical burr grinder can produce the coarse, even grind French press needs. Use the coarsest settings and expect some fines, which is normal for this burr type.

The grinder itself with its stainless steel conical burrs. No scale, dosing cup or extra burr set is listed, so plan on supplying your own.

Electric burr grinders of this class are audible but not as harsh as blade grinders. The slower motor runs longer per dose, so the sound lasts a bit more.