Seiko Cal. 5242 - 307

The 5242-307 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5242 caliber with 27j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-fab8236bd492]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1995

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