Seiko Cal. 5660 - 845

Released in 1975, the Cal. 5660 with design code 845 was part of Seiko's domestic market collection. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-2fe2ad9a2bc9]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1975

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