Seiko Cal. 6337 - 640

The Seiko 6337-640 represents an important milestone in Seiko's 1987 lineup. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-623a4de33a67]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1987

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