Seiko Cal. 4431 - 761

Seiko 4431-761

This Spring Drive model from 1972 features a 39mm Hardlex-Coated Steel case. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-d8f39bb276e4]

Also known as: Silverwave

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
10.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
100m
Dial Color
Silver
Jewels
24j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1972

Related Models

seikata-wm-d8f39bb276e4