Seiko Cal. 5639 - 315

This Hand-Winding model from 1978 features a 36mm Two-Tone case. It features a Champagne dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-401a3258aa3e]

Also known as: World Timer, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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