Seiko Cal. 5681 - 187

The Seiko 5681-187 represents an important milestone in Seiko's 1980 lineup. It features a Navy dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-fc169cb43cfd]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1980

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