What are the case specifications of the Seiko Prospex?

The Seiko Prospex features a 42mm diameter, 12.9mm thick, Steel case with a sapphire crystal crystal.

What movement does the Seiko Prospex use?

The Seiko Prospex is powered by a Automatic, caliber 6R54, 72h power reserve.

Seiko Prospex

AutomaticSteel

Ref. SBEJ023

Collection: ProspexCase size: 42mmMovement: 6R54

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Last updated 8 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

CASE

Diameter

42mm

Thickness

12.9mm

Lug to Lug

48.6mm

Case Material

Steel

Crystal

Sapphire Crystal

Bezel Material

Ceramic

MOVEMENT

Movement Type

Automatic

Caliber

6R54

Power Reserve

72h

Frequency

21,600 vph (3 Hz)

Jewels

24 jewels

BRACELET/STRAP

Clasp Type

Fold Clasp

FEATURES & COMPLICATIONS

GMTLimited EditionLuminous handsLuminous indicesRotating BezelScrew-Down Crown

SARH001

AutomaticSteel

QUICK FACTS

BRAND

Seiko

REFERENCE

SBEJ023

COLLECTION

Prospex

MOVEMENT

Automatic

CALIBER

6R54

CASE MATERIAL

Steel

CRYSTAL

Sapphire Crystal

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Last updated 8 Oct 2026Suggest a correction

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Seiko Prospex

TECHNICAL SPECIFICATIONS

CASE

MOVEMENT

BRACELET/STRAP

FEATURES & COMPLICATIONS

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