Seiko Cal. 3859 - 827

This Hand-Winding model from 1977 features a 37mm Titanium case. With its 19mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-0b35f73b7c11]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1977

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