Seiko Cal. 6631 - 401

The Seiko 6631-401 represents an important milestone in Seiko's 1998 lineup. It features a Black dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-cea6a5bb852f]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1998

Related Models

• Seiko 3813-282
• Seiko 4448-937
• Seiko 6114-858
• Seiko 7018-686
• Seiko 0746-819
• Seiko 3870-813
• Seiko 6196-962
• Seiko 7195-933
• Seiko 5687-757
• Seiko 7088-461
• Seiko 6644-200
• Seiko 4589-641