Seiko Cal. 5240 - 736

The 5240-736 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-f7652b1f0c99]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1983

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