Seiko Cal. 6690 - 336

Released in 1972, the Cal. 6690 with design code 336 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-bb30d648b9ef]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1972

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