Seiko Cal. 6340 - 657

The Seiko 6340-657 represents an important milestone in Seiko's 1982 lineup. With its 19mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-9e8222723861]

Also known as: UFO, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1982

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