Rolex Submariner 2020 Upgrade: Inside the

Quick Questions

What makes the 2020 Rolex Submariner 126613LN a game-changer in the two-tone dive watch segment?
Is the 41mm case of the new 126613LN genuinely larger on the wrist than its 40mm predecessor?
Why did Rolex switch from the caliber 31XX to the 32XX movement in the Submariner line?
How does the new 126613LN compare to the outgoing 116613LN in terms of design and performance?
What role did the Baselworld cancellation play in Rolex's September 1, 2020 announcement?

In September 2020, Rolex broke its usual silence following the Baselworld cancellation by unveiling a sweeping refresh of the Submariner family. Among the standout releases was the updated two-tone reference 126613LN, a gold-and-steel dive watch that replaced the long-serving 116613LN. This model not only brings the latest mechanical heart but also introduces subtle yet significant changes to the iconic profile.

A New Era for the Submariner Line

For years, the Submariner series relied on the older 31XX movements, but 2020 marked a decisive shift to the new-generation 32XX calibers. The 126613LN now houses the Rolex Caliber 3235, offering a 70-hour power reserve—a substantial improvement over the previous 48 hours. This upgrade alone justifies the reference change, but Rolex went further with several visual tweaks.

Case and Bracelet Refinements

The most obvious change is the case diameter, which has grown from 40mm to 41mm. However, the lugs have been slimmed and reshaped, echoing the vintage 16613 Submariner. As a result, despite the larger spec sheet, the watch wears similarly to its predecessor, with a more elegant profile that belies its size. The bracelet also saw a widening from 20mm to 21mm, maintaining the Oyster's solid three-link construction with polished center links and brushed outer links.

Design Consistency with Subtle Upgrades

Following Rolex's philosophy of evolution over revolution, the 126613LN retains the classic black dial and Cerachrom bezel insert, now paired with a unidirectional rotating bezel. The two-tone combination of 18ct gold and 904L Oyster steel remains a signature, offering a blend of luxury and durability. The Glidelock extension system ensures a precise fit over dive suits.

Key Specifications at a Glance

Movement: Rolex Caliber 3235, automatic
Case Diameter: 41mm
Lug Width: 21mm
Water Resistance: 300 meters / 1,000 feet
Power Reserve: 70 hours

The 126613LN represents a thoughtful maturation of the Submariner concept, appealing to collectors who value both tradition and modern engineering. Its release in 2020, alongside the broader Submariner range update, underscored Rolex's commitment to innovation while honoring a storied heritage.