Seiko Cal. 0781 - 870

This Spring Drive model from 1987 features a 45mm Two-Tone case. Powered by the 0781 caliber with 20j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-1ea074c04e57]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1987

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