Seiko Cal. 3865 - 851

The 3865-851 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-dd7e68afb666]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1967

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