Seiko Cal. 6690 - 541

The Seiko 6690-541 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-a93c617c349d]

Also known as: Silverwave, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1968

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