Seiko Cal. 6633 - 721

The Seiko 6633-721 represents an important milestone in Seiko's 1971 lineup. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-3d6a8c5f9230]

Also known as: Samurai, Shogun

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1971

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