Seiko Cal. 5660 - 742

The Seiko 5660-742 represents an important milestone in Seiko's 1976 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-2649f3a9e084]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1976

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