Seiko Cal. 6628 - 240

The Seiko 6628-240 represents an important milestone in Seiko's 1971 lineup. Powered by the 6628 caliber with 28j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-6a3123255f9f]

Also known as: Shogun, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1971

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