Name: Jaeger-LeCoultre Master Ultra Thin Q1238421 39 mm Grey Dial
Brand: Jaeger-LeCoultre
SKU: Q1238421
Availability: InStock

Specifications

A concise reference view of the case, dial, bracelet and movement details buyers compare first.

Diameter39 mm

MaterialStainless steel

DialGrey

CalibreJaeger-LeCoultre Calibre 899

Water resistance5 bar / 50 m

Case7 fields

Diameter	39 mm
Thickness	7.9 mm
Shape	Round
Material	Stainless steel
Caseback	See-Through
Water resistance	5 bar / 50 m
Water Resistance Category	Swim

Movement7 fields

Calibre	Jaeger-LeCoultre Calibre 899
Calibre family	899 automatic platform
Movement	automatic
Power reserve	70 hours
Frequency	28,800 vph
Jewels	32 jewels
In House Movement	Yes

Dial and bracelet7 fields

Dial	Grey
Dial finish	Sunburst
Markers	Applied
Display	Analog
Date	Yes
Calendar	Simple
Clasp	Deployant

Functions and complications2 fields

Complications	Date, Hour, Minute, Seconds
Complication count	4

Reference details5 fields

Gender	Men's
Production status	Active
Origin	Switzerland
Warranty	8 years
Size category	Large

Price history

Recent price movement

Current medianSAR 44,489

Lowest medianSAR 44,319

Highest medianSAR 44,489

Median delivered estimate Lowest tracked offer

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Tracking 8 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer.

Overview

About this reference

The Master Ultra Thin Q1238421 pairs a 39 mm stainless-steel round case with a 7.889 mm profile, giving the time-and-date format a distinctly light presence. Its grey sunburst dial uses applied markers to organise the date, hours, minutes and seconds, while the deployant clasp and see-through back add a considered finish to the otherwise quiet layout. The case is rated to 50 metres, keeping the reference as practical as it is restrained in appearance.

Automatic Calibre 899 is made in-house and provides 70 hours of power reserve from a single barrel. It contains 218 parts and 32 jewels, operates at 4 Hz and uses a silicon escapement. Fine finishing is visible through the display back, and the movement's functions match the dial's date, hours, minutes and seconds. The cased watch also undergoes Jaeger-LeCoultre's 1000 Hours Control.

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