Seiko Cal. 6690 - 717

This Automatic model from 1985 features a 42mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-86d80a524e6e]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1985

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