Seiko Cal. 3817 - 351

The 3817-351 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-a46ea25e7d56]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1977

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