Seiko Cal. 4517 - 378

This Spring Drive model from 1984 features a 36mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-3b25c1c0d99e]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1984

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