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Specifications

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

Diameter36 mm
Materialsteel
DialChampagne
Bracelet materialStainless steel
CalibreTudor Calibre MT5400
Water resistance10 bar / 100 m
Case11 fields
Diameter36 mm
Thickness10.5 mm
Lug width19 mm
ShapeRound
Materialsteel
BezelFixed
Bezel materialStainless Steel
CrownScrew-Down
CrystalFlat sapphire crystal
Water resistance10 bar / 100 m
Water Resistance CategorySwim
Functions and complications2 fields
ComplicationsPower Reserve
Complication count1
Reference details5 fields
GenderUnisex
Production statusActive
OriginSwitzerland
Warranty5 years
Size categoryMedium
Dial and bracelet10 fields
DialChampagne
Dial finishSatin
DisplayAnalog
LumeSuper-LumiNova
Luminous displayYes
BraceletBracelet
Bracelet materialStainless steel
Strap materialStainless Steel
Strap colorSilver
ClaspFolding Clasp
Movement8 fields
CalibreTudor Calibre MT5400
Calibre familyMT54xx
Movementautomatic
Power reserve70 hours
Frequency28,800 vph
Jewels27 jewels
Stop SecondsYes
In House MovementYes
Additional details1 field
Bezel Material OriginalStainless steel
Price history

Recent price movement

Current medianSAR 17,094
Lowest medianSAR 16,536
Highest medianSAR 17,094
Median delivered estimate Lowest tracked offer
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Tracking 3 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 Tudor Black Bay One M79640-0003 shares the 36 mm steel case of its family, with a 10.5 mm thickness that keeps the round profile clean. Here the satin dial is champagne, set against a fixed stainless steel bezel and silver stainless steel bracelet. The flat sapphire crystal, screw-down crown and Super-LumiNova retain the collection's practical detailing, while 100-metre water resistance gives the unisex configuration a clear everyday specification.

Its automatic MT5400 is built on a Tudor/Kenissi manufacture platform and winds through an openworked tungsten monobloc rotor. The 27-jewel movement measures 30.3 mm across and 5 mm high, using a free-sprung variable-inertia balance and flat silicon hairspring at 28,800 vibrations per hour. A 70-hour power reserve and COSC Chronometer certification complete its technical profile. In the Black Bay One line, this reference is defined by the champagne dial rather than a change in case architecture.

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