Seiko Cal. 5644 - 818

Seiko 5644-818

This Hand-Winding model from 1973 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-bb467b35b2d8]

Also known as: Turtle, World Timer

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
11.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Champagne
Jewels
17j
Frequency
36,000 bph
Power Reserve
55 hours
Year
1973

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