Seiko Cal. 5255 - 512

The Seiko 5255-512 represents an important milestone in Seiko's 1970 lineup. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-89159ff1a5b0]

Also known as: Helmet, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1970

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