Seiko Cal. 3870 - 829

This Spring Drive model from 1976 features a 35mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-e37e0c26c3e0]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1976

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