Skip to content
Seiko

Seiko SKP400

QuartzSteel

Ref. SKP400

Case size: 40.7mmMovement: 7N39

The Seiko reference SKP400 has a steel case measuring 40.7 mm across. The case has a thickness of 6.3 mm. The movement is quartz calibre 7N39, which contains 1 jewel and has a battery life of approximately 60 months. The watch has a folding clasp with push-button release. The movement has an accuracy of plus or minus 15 seconds per month. The distance between the lugs measures 24 mm. The dial is covered by a sapphire crystal.

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 9 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

40.7mm

Thickness

6.3mm

Lug Width

24mm

Case Material

Steel

Crystal

Sapphire Crystal

MOVEMENT

Movement Type

Quartz

Caliber

7N39

Jewels

1 jewels

BRACELET/STRAP

Clasp Type

Fold Clasp

More from Seiko

Show all →

Other watches with the 7N39 calibre

Show all →

FOR WATCH DEALERS

Trading the Seiko SKP400?

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