Optima

          

# 1923# Chronograph# Crown guards# Cushion case# Date disc# Day-date# Dive watches# ETA 7750 Valjoux# GMT# GMT Bezel# Power reserve# RW24# RW24-S# Sector dial# Skeleton# Small second# Sport watches# STP 1-11# STP2-12-13# Switzerland# Textured dial# Tri-Compax