Seiko Cal. 6645 - 441

The Seiko 6645-441 represents an important milestone in Seiko's 1965 lineup. Powered by the 6645 caliber with 26j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-e7b301f3cc40]

Also known as: Turtle, UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1965

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