Seiko Cal. 3899 - 840

This Spring Drive model from 1966 features a 36mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-57d27a64d840]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1966

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