Seiko Cal. 5240 - 121

The 5240-121 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5240 caliber with 29j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-fcfecfb12f0c]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1989

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