Seiko Cal. 6616 - 780

Released in 1986, the Cal. 6616 with design code 780 was part of Seiko's domestic market collection. With its 18mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-1de26f9eb1ff]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1986

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