Seiko Cal. 5646 - 313

This Spring Drive model from 1975 features a 44mm Hardlex-Coated Steel case. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-3d3a77fe5755]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1975

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