What are the case specifications of the Seiko?

The Seiko features a 43mm diameter, 11.6mm thick case with a sapphire crystal 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 Quartz, caliber 8T63.

Seiko SSB445

Quartz

Ref. SSB445

Case size: 43mmMovement: 8T63

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Last updated 8 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

43mm

Thickness

11.6mm

Lug to Lug

50.4mm

Lug Width

22mm

Water Resistance

100m

Crystal

Sapphire Crystal

MOVEMENT

Movement Type

Quartz

Caliber

8T63

FEATURES & COMPLICATIONS

ChronographDateLuminous handsLuminous indicesSmall seconds

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QUICK FACTS

BRAND

Seiko

REFERENCE

SSB445

MOVEMENT

Quartz

CALIBER

8T63

CRYSTAL

Sapphire Crystal

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 SSB445

TECHNICAL SPECIFICATIONS

GENERAL

CASE

MOVEMENT

FEATURES & COMPLICATIONS

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FOR WATCH DEALERS