Seiko Cal. 5631 - 741

The 5631-741 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-2f3d3cdf9dac]

Also known as: Tuna, Navigator

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1993

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