Seiko Cal. 5644 - 738

The Seiko 5644-738 represents an important milestone in Seiko's 1986 lineup. Powered by the 5644 caliber with 33j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-d833906a1939]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1986

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