Seiko Cal. 7131 - 705

This Hand-Winding model from 1978 features a 39mm PVD Black case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-6320d2667ecc]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1978

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