Omega 1538

Last updated: August 4, 2025
Diagram of an Omega 1538 watch movement, showing battery and labeled components in black and gray.

Brand

Caliber Number

1538

Production Period

1995 – 2006

Lignes

11 ½”’

Diameter

25.6 mm

Height

1.95 mm

Power Reserve

Unconfirmed

Frequency

32,768 Hz

Jewels

6

Escapement

Quartz Stepper Motor

Anti-Shock Device

Inherently High

Hand Count

3 (Hours, Minutes, Seconds)

Manufacture Region

Unconfirmed

Functions

Hours, Minutes, Seconds, Date, Independent Hour Hand, EOL Indicator

Omega 1538 Description

The Omega 1538 is a high-precision Swiss quartz movement based on the ETA 255.461, famously used in the Seamaster Professional 300M “Bond” watch (ref. 2541.80). Produced from the mid-90s to the 2000s, it features an independent hour hand for easy time zone changes and a battery end-of-life (EOL) indicator. It represented a durable and highly accurate option in Omega’s professional dive watch line.

Watches Using The Omega 1538 Caliber

A stainless steel Omega Seamaster Professional 300M 2561.80.00 watch with a blue wave-patterned dial, white hour markers, date window at 3 oclock, and rotating bezel. The silver bracelet features polished and brushed links.
Seamaster

Omega Seamaster Professional 300M 2561.80.00

1993-2006
36.25mm