Seiko Cal. 3817 - 512

The 3817-512 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-819da9dc9308]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1990

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