Seiko Cal. 5647 - 764

The Seiko 5647-764 represents an important milestone in Seiko's 1990 lineup. With its 22mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-5e2da61addd9]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1990

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