Seiko Cal. 5644 - 561

Seiko 5644-561

This Hand-Winding model from 1970 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-c69b07ebba23]

Also known as: Turtle, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
9.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Silver
Jewels
22j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1970

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seikata-wm-c69b07ebba23