Seiko Cal. 6621 - 307

Released in 1968, the Cal. 6621 with design code 307 was part of Seiko's domestic market collection. Powered by the 6621 caliber with 26j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-870288c0d20c]

Also known as: Golden Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1968

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