Seiko Cal. 6631 - 576

This Quartz model from 1987 features a 34mm Two-Tone case. Powered by the 6631 caliber with 17j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-838de501b198]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1987

Related Models

• Seiko 0790-924
• Seiko 6185-588
• Seiko 3897-154
• Seiko 6679-618
• Seiko 6687-801
• Seiko 4594-484
• Seiko 4497-827
• Seiko 4569-789
• Seiko 0731-886
• Seiko 6266-479
• Seiko 6238-894
• Seiko 6667-262