Seiko Cal. 6631 - 286

This Automatic model from 1970 features a 39mm Stainless Steel case. It features a Cream dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-564bbcd510ce]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1970

Related Models

• Seiko 5698-446
• Seiko 0756-356
• Seiko 7093-171
• Seiko 7167-468
• Seiko 5682-275
• Seiko 6279-960
• Seiko 6228-432
• Seiko 4580-168
• Seiko 3893-668
• Seiko 4552-952
• Seiko 6146-927
• Seiko 5636-148