Seiko Cal. 5688 - 310

The Seiko 5688-310 represents an important milestone in Seiko's 1965 lineup. Powered by the 5688 caliber with 24j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-05c69c844948]

Also known as: Samurai, Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1965

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