Seiko Cal. 5635 - 647

Seiko 5635-647

The 5635-647 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-ef67c38b3486]

Also known as: Golden Tuna, Arnie

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
39mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Navy
Jewels
25j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1975

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