Seiko Cal. 5644 - 847

Seiko 5644-847

This Spring Drive model from 1965 features a 39mm Titanium case. It features a Navy dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-f8fdad44e3b4]

Also known as: Baby Tuna, Arnie

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
39mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Navy
Jewels
27j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1965

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