Seiko Cal. 3818 - 684

This Spring Drive model from 1991 features a 40mm PVD Black case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-e757a8d26c55]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1991

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