Seiko Cal. 5240 - 431

This Solar model from 1965 features a 40mm PVD Black case. Powered by the 5240 caliber with 23j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-649acd91fa87]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1965

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