Seiko Cal. 6221 - 136

The Seiko 6221-136 represents an important milestone in Seiko's 1968 lineup. Powered by the 6221 caliber with 17j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-7d6f17188a51]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1968

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