Seiko Cal. 6387 - 727

The Seiko 6387-727 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-aa584d1f2b77]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1977

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