Seiko Cal. 5285 - 540

The Seiko 5285-540 represents an important milestone in Seiko's 1981 lineup. Powered by the 5285 caliber with 34j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-eef09cffa61b]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1981

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