The Rolex Caliber 1401 is a manual-winding mechanical movement from the 14xx series, introduced in the 1980s and used through the 1990s, specifically developed for ladies’ Rolex watches. It is the date-equipped version of the Caliber 1400, designed to offer the added practicality of a calendar function in a compact, hand-wound format. Rolex incorporated this movement into slim and elegant timepieces such as the Oysterdate Precision and Cellini Date, combining mechanical reliability with understated design.

Though often overlooked in favor of larger automatic calibers, the 1401 remains a refined and serviceable movement crafted to Rolex’s high standards.

Technical Specifications

• Type: Manual-winding

• Functions: Hours, minutes, date

• Jewels: 17

• Frequency: 21,600 vibrations per hour (vph)

• Power Reserve: ~42 hours

• Shock Protection: KIF or Incabloc

• Chronometer Certified: No (typically labeled “Precision”)

• Quickset Date: No (date set by rotating the hands past midnight)

• Hacking Seconds: No

This movement was used in Rolex watches with small case sizes (24 mm to 28 mm), primarily for elegant, feminine, and time/date-focused models.

Movement Features

The Caliber 1401 was based on the architecture of the 1400 but with an integrated calendar mechanism. Its key features include:

• Three-bridge movement design, ensuring structural rigidity and ease of maintenance

• Rhodium-plated bridges and plates for long-term corrosion protection

• Calendar gear assembly under the dial, enabling date advancement

• Free-sprung balance wheel with manual regulation

• High beat rate (21,600 vph) for improved stability and accuracy

• Smooth, tactile winding action, characteristic of Rolex’s hand-wound calibers

Despite the added complication, the movement retains a low profile, ideal for slim case designs.

Watches Powered by Caliber 1401

The Caliber 1401 was primarily fitted into ladies’ Rolex models that emphasized both form and function, including:

• Rolex Oysterdate Precision (manual-wind)

• Rolex Cellini Date models, known for their gold or platinum dress cases

• Rolex Geneve-branded watches, particularly in European markets

• Possibly select Tudor models, as Rolex often shared movement platforms during this period

Common features of these watches:

• Small date window at 3 o’clock, often with a Cyclops magnifier

• Acrylic or mineral domed crystals

• Slim bezels, minimalist dials with baton or Roman markers

• Leather straps or fine bracelets, often in matching precious metals

Reliability and Servicing

The Rolex 1401 is respected for its:

• Mechanical reliability, especially when maintained regularly

• Simplicity of design, which eases service and part replacement

• Longevity, as many examples from the 1980s–1990s are still running strong today

• Recommended servicing every 4–6 years to maintain lubrication and performance

It shares parts compatibility with other 14xx movements, aiding in long-term maintenance.

Collectibility and Appeal

Although modest in collector value, the 1401 is gaining recognition for:

• Its rarity in modern Rolex production, as Rolex shifted to automatic movements

• Appealing to collectors of vintage Rolex dress watches, especially in gold

• Being a reliable, mechanical alternative to quartz in small-format watches

• Offering authentic Rolex engineering in an elegant, understated size

Well-preserved examples with original dials, cases, and bracelets—especially in 18k gold—are of particular interest to enthusiasts of vintage ladies’ watches.

Final Thoughts

The Rolex Caliber 1401 is a refined and practical manual-wind movement, blending Rolex’s mechanical heritage with a compact, date-equipped design. Created for slim and stylish timepieces, it remains a reliable engine for those who appreciate discreet elegance, traditional watchmaking, and functional simplicity. For collectors or everyday wearers seeking a vintage Rolex with grace and utility, the 1401 is a charming and trustworthy choice.