Seiko Cal. 6391 - 415

The Seiko 6391-415 represents an important milestone in Seiko's 1966 lineup. Powered by the 6391 caliber with 36j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-6e633def6458]

Also known as: UFO, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1966

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