Omega Caliber 1425: Quartz Elegance in Compact Form

The Omega Caliber 1425 is a high-precision quartz analog movement, introduced in the late 1970s as part of Omega’s expanding family of ultra-thin quartz calibers. Closely related to the 1420 and 1422, the 1425 was tailored for slimmer, smaller case designs, particularly in the De Ville and Constellation lines. Its compact size and minimalist function made it ideal for ladies' watches and unisex models, where space efficiency and elegance were essential.

Like its siblings, the 1425 helped Omega maintain its reputation for Swiss precision, while embracing the low-maintenance benefits of quartz.

Technical Specifications

• Type: Quartz analog

• Functions: Hours, minutes (no seconds), quickset date

• Jewels: 6

• Battery: 321 (SR616SW)

• Frequency: 32,768 Hz (standard quartz)

• Accuracy: ±15 seconds/month

• Power Reserve: ~2 years

• Quickset Date: Yes

• Hacking Seconds: Not applicable (no seconds hand)

• Dimensions: Diameter ~13 mm; ultra-thin profile

• Finish: Rhodium-plated, compact modular build

What sets the 1425 apart from the 1420/1422 is its two-hand layout (hours and minutes only), which allowed Omega to reduce the movement’s footprint—perfect for thin, elegant watches where a sweeping seconds hand was unnecessary.

Watches Featuring Caliber 1425

The 1425 was used in:

• Omega De Ville Quartz (ladies’ and mini sizes)

• Omega Constellation Slimline models

• Dress watches with minimalist dials and small diameters

• Case sizes typically ranging from 24mm to 30mm

These watches often featured:

• Slim gold or stainless steel cases

• Integrated bracelets or fine leather straps

• Applied hour markers and simple Omega signatures

• Date display at 3 o’clock, blending functionality with style

The minimalist design was consistent with the late-70s and early-80s aesthetic, where refinement and practicality went hand-in-hand.

Performance and Daily Use

With no seconds hand and only two hands on display, the 1425 prioritized:

• Simplicity and ease of reading

• Battery efficiency, with less energy used for motor function

• Quiet operation, with no ticking sound

Its quartz oscillator ensured long-term accuracy, making these watches ideal for daily wear, especially for those who preferred low-maintenance reliability over mechanical charm.

Maintenance and Serviceability

The 1425 is straightforward to service:

• Battery changes every 2 years

• Gasket checks for water resistance

• Minimal wear on components due to limited moving parts

Although discontinued, donor movements and service parts are still available through vintage parts suppliers and Omega-certified repair centers.

Collector Appeal

While not a flagship movement, the Caliber 1425 has growing appeal among collectors who value:

• Omega’s quartz innovation during the transitional era

• Elegance in compact designs

• Underappreciated models from the quartz boom

• Affordable vintage options with luxury pedigree

It’s especially attractive to collectors looking to preserve or restore original ladies' Omega watches from the late 1970s and 1980s.

Final Thoughts

The Omega Caliber 1425 quietly played a role in Omega’s success during the quartz revolution. Designed for elegant, no-fuss timekeeping, it continues to serve as a reliable heart in some of the brand’s most refined vintage models. For collectors of compact, dress-oriented quartz Omegas, the 1425 offers classic Swiss quality in a subtle and stylish package.