Seiko Cal. 6638 - 595

The Seiko 6638-595 represents an important milestone in Seiko's 1966 lineup. Powered by the 6638 caliber with 28j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-87cf823c38b6]

Also known as: Panda, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1966

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