Seiko Cal. 3876 - 866

The Seiko 3876-866 represents an important milestone in Seiko's 1976 lineup. Powered by the 3876 caliber with 31j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-e3df5eecc38a]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1976

Related Models

• Seiko 5646-481
• Seiko 4446-704
• Seiko 6279-996
• Seiko 6695-453
• Seiko 4557-715
• Seiko 6616-310
• Seiko 4541-314
• Seiko 7050-936
• Seiko 3823-128
• Seiko 0734-325
• Seiko 4448-816
• Seiko 3815-890