Seiko Cal. 6620 - 168

The Seiko 6620-168 represents an important milestone in Seiko's 1980 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-238d6d2ae3ce]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1980

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