Seiko Cal. 5240 - 615

This Spring Drive model from 1971 features a 40mm Titanium case. Powered by the 5240 caliber with 24j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-a2d223ab18bd]

Also known as: Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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