[cynical streak]
Bear in mind that "Seiko movement" can mean a PC21 and "Citizen" is likely a 2035. While they're reliable enough (the '35 is very repairable if it wasn't so cheap to replace) they're also used in the vast majority of cheap watches because they're, errr, cheap thanks to economies of scale.
Other things to be wary of is they're boasting about "mineral glass" (that's normal glass to you & me) and "stainless steel backs" (but the rest of the case may be made of best Swiss Emmental). Kind of leaves you wondering, if they're the good points what are the bad ones?
[/cynical streak]