Seiko Cal. 6645 - 560

The Seiko 6645-560 represents an important milestone in Seiko's 1966 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-d205228baea3]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1966

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