Seiko Cal. 6388 - 858

This Spring Drive model from 1988 features a 44mm Stainless Steel case. It features a Silver dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-1be416b72e1e]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1988

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