Seiko Cal. 5255 - 399

The Seiko 5255-399 represents an important milestone in Seiko's 1978 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-10ac7bfec56a]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1978

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