Seiko Cal. 6645 - 465

The Seiko 6645-465 represents an important milestone in Seiko's 1973 lineup. With its 22mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-3e17f9779ceb]

Also known as: Helmet, World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1973

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