Seiko Cal. 6387 - 857

The Seiko 6387-857 represents an important milestone in Seiko's 1970 lineup. With its 20mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-759a7685859a]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1970

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