Seiko Cal. 6690 - 197

This Spring Drive model from 1966 features a 46mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-75ecfaa5a270]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1966

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