Seiko Cal. 5656 - 391

Released in 1975, the Cal. 5656 with design code 391 was part of Seiko's domestic market collection. With its 20mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-8aa8bb076b1e]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1975

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