Seiko Cal. 6631 - 504

This Hand-Winding model from 1990 features a 43mm Hardlex-Coated Steel case. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-abee604c5218]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1990

Related Models

• Seiko 6121-129
• Seiko 6238-759
• Seiko 5295-128
• Seiko 6652-179
• Seiko 7184-364
• Seiko 6228-148
• Seiko 7073-163
• Seiko 4553-470
• Seiko 4591-405
• Seiko 5286-156
• Seiko 6347-913
• Seiko 4543-936