Seiko Cal. 6390 - 315

The Seiko 6390-315 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-f0c05e1f57d2]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1965

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