Seiko Cal. 5687 - 538

The Seiko 5687-538 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-f0ffba077707]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1966

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