Seiko Cal. 0748 - 596

This Spring Drive model from 1976 features a 45mm Stainless Steel case. It features a Silver dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-7401b709513f]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1976

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