Seiko Cal. 5687 - 280

The Seiko 5687-280 represents an important milestone in Seiko's 1990 lineup. Powered by the 5687 caliber with 31j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-0e54ac2ef008]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1990

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