Seiko Cal. 6634 - 918

Seiko 6634-918

This Spring Drive model from 1984 features a 45mm Hardlex-Coated Steel case. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-798d42ca0c12]

Also known as: Helmet, Bellmatic

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
13.6mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
23j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1984

Related Models

seikata-wm-798d42ca0c12