Seiko Cal. 6645 - 719

The Seiko 6645-719 represents an important milestone in Seiko's 1966 lineup. Powered by the 6645 caliber with 25j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-c2540f67ca59]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1966

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