Seiko Cal. 6391 - 459

The Seiko 6391-459 represents an important milestone in Seiko's 1975 lineup. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-262b3f27747e]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1975

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