Seiko Cal. 5639 - 761

The 5639-761 is a sought-after Kinetic piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-f672c3d0ebc5]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1970

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