Seiko Cal. 6221 - 721

Released in 1967, the Cal. 6221 with design code 721 was part of Seiko's domestic market collection. Powered by the 6221 caliber with 18j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-50c7fd7003bc]

Also known as: Turtle, Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1967

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