Seiko Cal. 6690 - 440

The Seiko 6690-440 represents an important milestone in Seiko's 1965 lineup. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-cac8530b2c1c]

Also known as: Panda, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1965

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