Seiko Cal. 5617 - 860

The Seiko 5617-860 represents an important milestone in Seiko's 1972 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-01477426be26]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1972

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