Seiko Cal. 6371 - 739

The 6371-739 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-f18b816feab1]

Also known as: Bullhead, Rally

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1981

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