Seiko Cal. 6157 - 722

This Spring Drive model from 1974 features a 37mm Hardlex-Coated Steel case. Powered by the 6157 caliber with 22j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-157d108df5d4]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

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