Seiko Cal. 7158 - 631

The Seiko 7158-631 represents an important milestone in Seiko's 1995 lineup. Powered by the 7158 caliber with 33j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-3df900914171]

Also known as: Monster, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1995

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