Seiko Cal. 6154 - 157

The Seiko 6154-157 represents an important milestone in Seiko's 1971 lineup. With its 19mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-4e71b1366949]

Also known as: Sportsmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1971

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