Seiko Cal. 5630 - 237

Seiko 5630-237

This Spring Drive model from 1991 features a 40mm Hardlex-Coated Steel case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-287c1513aa14]

Also known as: World Timer, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
14.7mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
200m
Dial Color
Silver
Jewels
34j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1991

Related Models

seikata-wm-287c1513aa14