Seiko Cal. 6311 - 378

Released in 1983, the Cal. 6311 with design code 378 was part of Seiko's domestic market collection. With its 20mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-aef1bf737bcd]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1983

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