What are the case specifications of the Seiko?

The Seiko features a 39mm diameter, 7.6mm thick, Steel case with a sapphire crystal crystal.

What is the water resistance of the Seiko?

The Seiko has a water resistance rating of 50m (rain/splash).

What movement does the Seiko use?

The Seiko is powered by a caliber 6N42.

Seiko SUR303

Steel

Ref. SUR303

Case size: 39mmMovement: 6N42

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Last updated 8 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

39mm

Thickness

7.6mm

Lug to Lug

46.6mm

Lug Width

20mm

Case Material

Steel

Water Resistance

50m

Crystal

Sapphire Crystal

MOVEMENT

Caliber

6N42

BRACELET/STRAP

Bracelet/Strap

Leather

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QUICK FACTS

BRAND

Seiko

REFERENCE

SUR303

CALIBER

6N42

CASE MATERIAL

Steel

CRYSTAL

Sapphire Crystal

WATER RESISTANCE

50m (rain/splash)

GENDER

Men

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Last updated 8 Oct 2026Suggest a correction

FOR WATCH DEALERS

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Seiko SUR303

TECHNICAL SPECIFICATIONS

GENERAL

CASE

MOVEMENT

BRACELET/STRAP

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SUR209

SUR211

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QUICK FACTS

FOR WATCH DEALERS