Seiko Cal. 6387 - 731

This Kinetic model from 1981 features a 39mm Two-Tone case. Powered by the 6387 caliber with 25j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-b10f539bd55f]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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