Seiko Cal. 6621 - 263

The Seiko 6621-263 represents an important milestone in Seiko's 1971 lineup. Powered by the 6621 caliber with 21j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-b9fe9bb18f1c]

Also known as: Shogun, Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1971

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