Seiko Cal. 6121 - 789

This Hand-Winding model from 1971 features a 44mm PVD Black case. Powered by the 6121 caliber with 29j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-496fb2ff6583]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1971

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