Seiko Cal. 5687 - 806

The Seiko 5687-806 represents an important milestone in Seiko's 1974 lineup. Powered by the 5687 caliber with 17j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-162fab3cd88b]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

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