Seiko Cal. 6158 - 691

The Seiko 6158-691 represents an important milestone in Seiko's 1979 lineup. Powered by the 6158 caliber with 19j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-8192925aa133]

Also known as: Tuna, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1979

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