Seiko Cal. 5681 - 581

This Spring Drive model from 1969 features a 45mm PVD Black case. Powered by the 5681 caliber with 25j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-90553104684d]

Also known as: Bellmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1969

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