What are the case specifications of the Seiko?

The Seiko features a 42.5mm diameter, 12.1mm thick, Steel case with a mineral glass crystal.

What is the water resistance of the Seiko?

The Seiko has a water resistance rating of 100m (swimming).

What movement does the Seiko use?

The Seiko is powered by a caliber 5M83.

Seiko SMY151

Steel

Ref. SMY151

Case size: 42.5mmMovement: 5M83

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Last updated 8 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

42.5mm

Thickness

12.1mm

Case Material

Steel

Water Resistance

100m

Crystal

Mineral Glass

MOVEMENT

Caliber

5M83

Jewels

6 jewels

BRACELET/STRAP

Clasp Type

Fold Clasp

FEATURES & COMPLICATIONS

Display backLuminous handsLuminous indices

QUICK FACTS

BRAND

Seiko

REFERENCE

SMY151

CALIBER

5M83

CASE MATERIAL

Steel

CRYSTAL

Mineral Glass

WATER RESISTANCE

100m (swimming)

GENDER

Men

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Last updated 8 Oct 2026Suggest a correction

FOR WATCH DEALERS

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Seiko SMY151

TECHNICAL SPECIFICATIONS

GENERAL

CASE

MOVEMENT

BRACELET/STRAP

FEATURES & COMPLICATIONS

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