Seiko Cal. 7157 - 831

This Hand-Winding model from 1976 features a 40mm Two-Tone case. It features a Champagne dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-e1d1f8c8afc5]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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