zOwie Omega Discussion Forum

: You are on the borderline for being out of the
: COSC spec of -4 to +6 seconds per day. Since
: you just bought it a couple of weeks ago, I
: would return it as defective if it were my
: watch. I'm not sure if you bought it from an
: authorized retailer, but they should swap it
: out for a replacement if you take it back
: and tell them it is consistently running out
: of COSC spec. I wouldn't keep it and
: "hope" it gets better, since the
: longer you wait the less likely your dealer
: will be to take the watch back. Your dealer
: can get full credit by returning it to Omega
: as defective merchandise, so they shouldn't
: give you a hard time.

: Regarding the movement, you can see if it is
: caliber 2500B or 2500C with a magnifying
: glass if you look next to the balance wheel.
: See Lucretius' post further down in which I
: asked the same question. The movement will
: be stamped 2500B or 2500C. 2500C is the
: newer version that has a slower beat rate to
: correspond to the recommendations of George
: Daniels, the founder of the co-axial
: escapement. 2500B has been discontinued and
: all new production Aqua Terras have caliber
: 2500C in them.

Yes, it is very important you check, the AT I bought eight days ago is having the same problem. Mine is a 2500B, needless to say it is going back.