Seiko Cal. 5631 - 996

Seiko 5631-996

This Spring Drive model from 1999 features a 37mm Stainless Steel case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f4899f3f473e]

Also known as: Turtle

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
14.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
170m
Dial Color
Silver
Jewels
36j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1999

Related Models

seikata-wm-f4899f3f473e