Seiko Cal. 0728 - 588

This Spring Drive model from 1968 features a 40mm Two-Tone case. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-6f1154dfbd0b]

Also known as: Crown, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1968

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