Seiko Cal. 6191 - 677

This Automatic model from 1967 features a 40mm PVD Black case. Powered by the 6191 caliber with 33j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-a1e3f4ff4949]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1967

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