Seiko Cal. 5240 - 537

The 5240-537 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5240 caliber with 21j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-22d3c4751262]

Also known as: UFO, Goldfeather

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1989

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