Seiko Cal. 6637 - 340

The Seiko 6637-340 represents an important milestone in Seiko's 1997 lineup. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-5bf05a1d7baa]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1997

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