Seiko Cal. 6687 - 328

Released in 1985, the Cal. 6687 with design code 328 was part of Seiko's domestic market collection. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-02ea53dcfcb0]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1985

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