Seiko Cal. 5251 - 655

The Seiko 5251-655 represents an important milestone in Seiko's 1977 lineup. Powered by the 5251 caliber with 30j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-1c7e96a678cd]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1977

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