Constellation

This is the smallest case in this batch I've catalogued — 25mm — and it goes all-in on Sedna gold, Omega's proprietary rose-gold alloy, for the case, bracelet, and dial together. Solid 18k rose gold at this scale means the weight-to-size ratio is noticeably different from a steel piece the same diameter; precious metal doesn't get lighter just because the case does. The in-house quartz manufacture movement is a genuine engineering choice rather than a compromise for the small size — Omega builds its own quartz calibers rather than buying commodity movements even here. 30m water resistance is modest, appropriately so for a watch clearly built around the gold rather than around utility.