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Tudor Black Bay One 31 S&G

Tudor Black Bay One 31 S&G

AutomaticSteel

Ref. M79603-0007

Collection: Black Bay OneCase size: 31mmMovement: MT5201

The Tudor Black Bay One 31 S&G, reference M79603-0007, has a 31 mm steel case. The case is 9.5 mm thick with a 17 mm lug width. The self-winding calibre MT5201 is a chronometer with a power reserve of approximately 50 hours. A flat sapphire crystal covers the silver dial, which is set with diamonds. The bezel is fixed and made of solid yellow gold. The screw-down crown is steel with a yellow gold cap. Tudor rates the case to 100 metres. A steel and gold bracelet is fitted to the watch, with a folding clasp in steel and gold.

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Last updated 6 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

CASE

Diameter

31mm

Thickness

9.5mm

Lug Width

17mm

Case Material

Steel

Water Resistance

100m

Crystal

Sapphire Crystal

Bezel Material

Yellow Gold

MOVEMENT

Movement Type

Automatic

Caliber

MT5201

Power Reserve

50h

Frequency

28,800 vph (4 Hz)

Jewels

26 jewels

DIAL

Dial Color

Silver

Numerals

Gemstones

BRACELET/STRAP

Bracelet/Strap

Gold/Steel

Clasp Type

Fold Clasp

Clasp Material

Gold/Steel

FEATURES & COMPLICATIONS

ChronometerGemstones and/or diamondsScrew-Down Crown

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FOR WATCH DEALERS

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