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The Longines ULTRA-CHRON CLASSIC is widely praised for its high-beat 5Hz movement, offering superior accuracy and a smooth seconds hand, with reviewers noting its TIMELAB certification for chronometer standards. Owners and reviewers alike commend its faithful retro design, capturing beloved 1960s details with modern relevance and a charming appearance. The bracelet is described as comfortable and refined, featuring a micro-adjustment clasp, and the sunray silver dial with sparkling indices is a notable strength. Some owners, however, find the 11mm thickness detracts from a vintage feel, and there is a desire for a no-date version. The 40mm case wears larger than expected, with many suggesting the 37mm version offers superior wearability and fit for most wrists, and its 50m water resistance is considered not exceptional. Overall, owners and reviewers rate the Longines ULTRA-CHRON CLASSIC highly for its accurate high-frequency movement and successful retro design at its price point.
Ultra-Chron
1 Variant· 37mm
Lume:Super-LumiNova
Retail MSRP
$4,000
Low
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Avg
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High
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Static data
Case
40mm
Power Reserve
72h
Movement
Automatic
Water Resistance
30m
01
Case Dimensions
Diameter
Thickness—
Lug-to-Lug—
Lug Width—
02
Case Build
MaterialStainless Steel
Water Resistance30m
CasebackTransparent case back with sapphire crystal
03
Crystal & Dial
CrystalSapphire
AR CoatingBoth sides
Dial ColorBlack with Silver Counters (Bracelet)
IndicesApplied indexes
LumeSuper-LumiNova
04
Movement
Caliber
TypeAutomatic
Beat Rate25,200 vph (3.5Hz)
Power Reserve72 hours
Jewels—
HackingNo
Hand-WindingNo
ComplicationsHours, minutes, seconds, moon phase display and date indicated by small hand at
05
Design Language
Dial styleMatte
BezelFixed
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026
In a nutshell
The Longines ULTRA-CHRON CLASSIC (ref. L2.937.4.72.6) is an automatic watch, with a 40mm stainless steel case, 10.95mm thick, powered by the L836.6 movement and a 72-hour power reserve. Water resistance is rated to 30m, under a sapphire crystal, with hours, minutes, seconds, moon phase display and date indicated by small hand at complications. Manufacturer MSRP is $4,000. The dial color is silver.