Seiko Cal. 5240 - 251

The 5240-251 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-aaf4c82a7aec]

Also known as: UFO, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1999

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