Seiko Cal. 3855 - 665

This Automatic model from 1981 features a 44mm Titanium case. Powered by the 3855 caliber with 20j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-61e9481d3947]

Also known as: Sumo, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1981

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