Seiko Cal. 3863 - 280

This Hand-Winding model from 1981 features a 46mm Stainless Steel case. Powered by the 3863 caliber with 17j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-073945d3c816]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1981

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