Seiko Cal. 5284 - 660

This Spring Drive model from 1969 features a 40mm Two-Tone case. Powered by the 5284 caliber with 24j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-50c121b7bf95]

Also known as: Monster, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1969

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