Seiko Cal. 5633 - 660

Released in 1973, the Cal. 5633 with design code 660 was part of Seiko's domestic market collection. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-33c57ed49ab0]

Also known as: Tuna, Silverwave

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1973

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