What are the case specifications of the Seiko?

The Seiko features a 41.5mm diameter 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 Quartz, caliber 8T63.

Seiko SSB425P1

Quartz

Ref. SSB425P1

Case size: 41.5mmMovement: 8T63

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 8 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

CASE

Diameter

41.5mm

Lug Width

22mm

Water Resistance

100m

Crystal

Mineral Glass

MOVEMENT

Movement Type

Quartz

Caliber

8T63

BRACELET/STRAP

Clasp Type

Fold Clasp

FEATURES & COMPLICATIONS

ChronographDateDisplay back

Other watches with the 8T63 calibre

Show all →

Seiko

HGK001

QuartzSteel

Seiko

HGK001P1

QuartzSteel

Seiko

HGK002

Quartz

Seiko

HGK002P1

QuartzSteel

Seiko

HGK003

QuartzSteel

Seiko

Seiko Selection Regular price

SBTR031

QuartzSteel

Seiko

Seiko Selection

SBTR033

QuartzSteel

Seiko

Seiko Selection Regular price

SBTR035

QuartzSteel

QUICK FACTS

BRAND

Seiko

REFERENCE

SSB425P1

MOVEMENT

Quartz

CALIBER

8T63

CRYSTAL

Mineral Glass

WATER RESISTANCE

100m (swimming)

Add to my inventory

Last updated 8 Oct 2026Suggest a correction

FOR WATCH DEALERS

Trading the Seiko SSB425P1?

Clone any catalog watch into your stock, sync it to Chrono24 and eBay, and invoice it with your own tax settings.

Explore dealer tools See inventory management

Seiko SSB425P1

TECHNICAL SPECIFICATIONS

CASE

MOVEMENT

BRACELET/STRAP

FEATURES & COMPLICATIONS

More from Seiko

Astron NEXTER

Astron

Astron NEXTER

Astron

Astron NEXTER

Astron

Astron NEXTER

Astron

Other watches with the 8T63 calibre

HGK001

HGK001P1

HGK002

HGK002P1

HGK003

Seiko Selection Regular price

Seiko Selection

Seiko Selection Regular price

QUICK FACTS

FOR WATCH DEALERS