Seiko Cal. 3899 - 255

The Seiko 3899-255 represents an important milestone in Seiko's 1966 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-5102d871cc58]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1966

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