Omega 38.5 Model Overview

The term "Omega 38.5" can refer to two distinct aspects of Omega's watch offerings:

1. Omega Caliber 38.5 (Manual-Wind Movement)

The Omega Caliber 38.5 is a manual-wind mechanical movement produced by Omega around 1945. It was used in some of Omega's vintage pocket watches. This movement is characterized by:

• Manual winding mechanism

• Sweep seconds and non-sweep seconds variations

• 17 jewels for enhanced precision

• Frequency of 18,000 vibrations per hour (vph) for stable timekeeping

• Dimensions of 12.1 x 15.6 mm

• Ligne size of 5 x 7'''

This movement was primarily used in vintage pocket watches, such as the Omega Ref. 374-13, which featured a stainless steel case and a silvered dial with black Arabic numerals and blued steel hands. These timepieces are now considered collectibles due to their historical significance and craftsmanship.

2. Omega Watches with 38.5mm Case Size

Omega has produced several models featuring a 38.5mm case size, offering a balance between the more traditional 38mm and the larger 41mm cases. This size is often favored for its versatility, fitting comfortably on various wrist sizes.

Notable Models:

• Omega Seamaster Aqua Terra 150M: Combines elegance with functionality, featuring a 38.5mm stainless steel case, a range of dial colors, and water resistance up to 150 meters. Some variations include diamond markers or mother-of-pearl dials for added luxury.

• Omega Seamaster Aqua Terra Skyfall Edition: Released in collaboration with the James Bond film "Skyfall," this limited edition watch boasts a 38.5mm case, a blue dial with a teak pattern, and a transparent case back showcasing the Omega Co-Axial movement.

• Omega Seamaster Aqua Terra 231.10.39.60.06.001: Features a 38.5mm stainless steel case, powered by the Omega caliber 4564 quartz movement. It offers a sleek grey dial, date function, and sapphire crystal, making it a stylish and practical choice.