Seiko Cal. 5643 - 275

The Seiko 5643-275 represents an important milestone in Seiko's 1965 lineup. With its 19mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-5cad0da61bf4]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1965

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