Seiko Cal. 5240 - 424

The 5240-424 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5240 caliber with 24j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-08a7b236d010]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1983

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