Omega Constellation chronometer 20 jewels automatic movement date Watch size width 33 length 40 mom And I've seen it work.

This is clock information found on the internet. It may be right or wrong that it is* I've seen it work. The problem I know about is that the crown doesn't lock. And there is no seconds hand. Strap length is 18.5 cm. This watch is for repair or use as spare parts. According to the actual picture

*Omega Gen's vintage wristwatch - 1969

collection: Constellation, ref. NO. 166,058

Omega chronometer 20 jewels automatic movement, cal. 1001 date function with quick setting