Seiko Cal. 6645 - 540

The Seiko 6645-540 represents an important milestone in Seiko's 1996 lineup. Powered by the 6645 caliber with 22j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-4c8a2595f2b3]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1996

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