Seiko Cal. 6340 - 910

The Seiko 6340-910 represents an important milestone in Seiko's 1967 lineup. With its 20mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-3c20d98d8c36]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1967

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