Seiko Cal. 7138 - 363

This Hand-Winding model from 1986 features a 34mm PVD Black case. Powered by the 7138 caliber with 28j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-2f1db5fc48bd]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1986

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