Seiko Cal. 5660 - 775

The Seiko 5660-775 represents an important milestone in Seiko's 1980 lineup. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-da0e87aac094]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1980

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