Seiko Cal. 6617 - 957

The Seiko 6617-957 represents an important milestone in Seiko's 1982 lineup. With its 20mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-c9ea48de9ccd]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1982

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