Seiko Cal. 6631 - 743

The 6631-743 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6631 caliber with 24j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-ea695ce6e007]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1987

Related Models

• Seiko 0784-656
• Seiko 5655-952
• Seiko 4451-417
• Seiko 0761-590
• Seiko 7180-953
• Seiko 0786-703
• Seiko 0755-516
• Seiko 6276-184
• Seiko 5285-785
• Seiko 4422-570
• Seiko 6695-445
• Seiko 3848-615