Seiko Cal. 5251 - 495

This Hand-Winding model from 1973 features a 40mm PVD Black case. With its 20mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-34a9f6d9cbf6]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1973

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