Seiko Cal. 6690 - 578

The Seiko 6690-578 represents an important milestone in Seiko's 1970 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-0a5916c25a3b]

Also known as: Monster, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1970

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