Seiko Cal. 5687 - 340

Released in 1969, the Cal. 5687 with design code 340 was part of Seiko's domestic market collection. With its 18mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-ffc758dbc3ba]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1969

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