Seiko Cal. 6687 - 400

The Seiko 6687-400 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-1e4514e45f89]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1970

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