Seiko Cal. 6681 - 677

The Seiko 6681-677 represents an important milestone in Seiko's 1997 lineup. Powered by the 6681 caliber with 22j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-1f5f2badb309]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1997

Related Models

• Seiko 3837-270
• Seiko 4454-941
• Seiko 7077-303
• Seiko 7186-769
• Seiko 3831-516
• Seiko 7036-658
• Seiko 5680-544
• Seiko 5253-434
• Seiko 6324-748
• Seiko 6164-787
• Seiko 3881-847
• Seiko 3863-333