Seiko Cal. 6138 - 531

The 6138-531 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-4d0dadbf288e]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1991

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