Seiko Cal. 3860 - 828

This Hand-Winding model from 1965 features a 40mm Hardlex-Coated Steel case. With its 22mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-9c6db9e8780c]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1965

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