Seiko Cal. 6644 - 637

Seiko 6644-637

This Hand-Winding model from 1978 features a 35mm Gold-Plated case. With its 19mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-0e2e0407b203]

Also known as: Samurai, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
14.4mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Silver
Jewels
19j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1978

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seikata-wm-0e2e0407b203