Seiko Cal. 5644 - 630

Seiko 5644-630

This Hand-Winding model from 1979 features a 35mm PVD Black case. With its 21mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-a6d510e9d63f]

Also known as: Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
35mm
Case Thickness
11.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Silver
Jewels
31j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1979

Related Models

seikata-wm-a6d510e9d63f