Seiko Cal. 5690 - 510

The Seiko 5690-510 represents an important milestone in Seiko's 1982 lineup. Powered by the 5690 caliber with 28j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-43ffd47ec31b]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1982

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