Seiko Cal. 3870 - 634

This Quartz model from 1967 features a 40mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-51c16984b27b]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1967

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