Seiko Cal. 6616 - 635

Released in 1979, the Cal. 6616 with design code 635 was part of Seiko's domestic market collection. With its 22mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-a413be9bf8f2]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1979

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