Seiko Cal. 6687 - 578

The Seiko 6687-578 represents an important milestone in Seiko's 1978 lineup. It features a Cream dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-1138b7425591]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1978

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