Seiko Cal. 6687 - 436

The Seiko 6687-436 represents an important milestone in Seiko's 1987 lineup. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-aaf373c553a7]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1987

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