Seiko Cal. 5285 - 991

The Seiko 5285-991 represents an important milestone in Seiko's 1978 lineup. Powered by the 5285 caliber with 28j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-19fed51dc2de]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1978

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