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The Longines ULTRA-CHRON CLASSIC is widely praised for its faithful retro design, high-beat 5Hz movement offering greater precision and a smooth seconds hand, and its value proposition as a new 5Hz watch. Reviewers highlight the L836.6 caliber's TimeLab "ultra chronometer" certification for superior accuracy and shock recovery, and owners find the bracelet very comfortable with easy micro-adjust. Some owners note the design appears dated, and one reviewer points out the dial lacks luminescence and water resistance is only 50m. Owners are split on sizing, with some finding the 40mm case wears larger than expected and recommending the 37mm version. Overall, owners and reviewers rate the Longines ULTRA-CHRON CLASSIC highly for its blend of vintage aesthetics, modern high-beat movement performance, and comfortable wearability.
Ultra-Chron
2 Variants
Lume:Super-LumiNova
Retail MSRP
$3,900
Low
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Avg
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High
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Static data
Case
37mm
Power Reserve
52h
Movement
Automatic
Water Resistance
50m
01
Case Dimensions
Diameter37mm
Thickness10.95mm
Lug-to-Lug44.6mm
Lug Width19mm
02
Case Build
MaterialStainless Steel
Water Resistance50m
CasebackScrew-down case back
03
Crystal & Dial
CrystalSapphire
AR CoatingBoth sides
Dial ColorBlack with Silver Counters (Leather)
IndicesApplied indexes
LumeSuper-LumiNova
04
Movement
Caliber
TypeAutomatic
Beat Rate36,000 vph (5.0Hz)
Power Reserve52 hours
Jewels—
HackingNo
Hand-WindingNo
ComplicationsHours, minutes, seconds and date
05
Design Language
Dial styleMatte
BezelFixed
Bracelet / strapLeather strap
HandsBaton
AI-detected from product image · 5/22/2026
In a nutshell
The Longines ULTRA-CHRON CLASSIC (ref. L2.537.4.72.2) is an automatic watch, with a 37mm stainless steel case, 10.95mm thick, powered by the L836.6 movement and a 52-hour power reserve. Water resistance is rated to 50m, under a sapphire crystal, with hours, minutes, seconds and date complications. Manufacturer MSRP is $3,900. The dial color is silver.