Seiko Cal. 6636 - 771

Seiko 6636-771

The Seiko 6636-771 represents an important milestone in Seiko's 1983 lineup. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-d473a0a560c8]

Also known as: Helmet, Goldfeather

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.6mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
110m
Dial Color
Black
Jewels
25j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1983

Related Models

seikata-wm-d473a0a560c8