Seiko Cal. 6680 - 740

This Hand-Winding model from 1986 features a 40mm PVD Black case. It features a White dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-233d3dbe00dd]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1986

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