Seiko Cal. 6637 - 730

Seiko 6637-730

This Hand-Winding model from 1980 features a 34mm Hardlex-Coated Steel case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-d837e2fff4d2]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
10.6mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Champagne
Jewels
26j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1980

Related Models

seikata-wm-d837e2fff4d2