Seiko Cal. 6221 - 135

This Spring Drive model from 1977 features a 41mm PVD Black case. Powered by the 6221 caliber with 31j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-41e8ecb2cb28]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

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