Seiko Cal. 5642 - 749

The Seiko 5642-749 represents an important milestone in Seiko's 1975 lineup. Powered by the 5642 caliber with 17j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-16fbd6a357c0]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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