Seiko Cal. 3865 - 784

The 3865-784 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-95fcd3a76f3a]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1997

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