This is a review of the watch, not the seller.  Citizen's work well and this has many functions.  Perpetual, atomic time, eco-drive.  Citizens are well made and this is one of the few with a sapphire crystal, not a mineral crystal (so it won't scratch easily).

I tried but the atomic function wouldn't work or it was permanently a second off.  It's got a lot of goodies but is not cheap --- probably why few have sold on Amazon as, say, compared with the 8700 movement watches by Citizen.  (They're a bit flashier in general and somewhat cheaper --- but no sapphire crystal).

If you can get an atomic signal easily that helps justify the price and makes it very accurate indeed.

Recommended for those willing to spend.