Seiko Cal. 6647 - 500

The Seiko 6647-500 represents an important milestone in Seiko's 1984 lineup. With its 22mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-f391dbe81aab]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1984

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