Seiko Cal. 5255 - 640

This Quartz model from 1970 features a 35mm PVD Black case. Powered by the 5255 caliber with 26j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-d4c8be6562d7]

Also known as: Helmet, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1970

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