Seiko Cal. 6131 - 424

This Hand-Winding model from 1977 features a 38mm PVD Black case. Powered by the 6131 caliber with 23j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-40165f811e94]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1977

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