Seiko Cal. 5681 - 521

This Hand-Winding model from 1965 features a 45mm Titanium case. It features a Burgundy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-0be6aaf1d4de]

Also known as: Tuna, Pogue

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1965

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