Seiko Cal. 6620 - 738

The Seiko 6620-738 represents an important milestone in Seiko's 1965 lineup. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-aa066ffa7e9c]

Also known as: Shogun, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1965

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