Seiko Cal. 3872 - 121

The Seiko 3872-121 represents an important milestone in Seiko's 1997 lineup. Powered by the 3872 caliber with 27j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-91fcb3db6d8a]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1997

Related Models

• Seiko 4526-344
• Seiko 6179-705
• Seiko 6328-743
• Seiko 4558-587
• Seiko 4563-490
• Seiko 5222-227
• Seiko 5231-334
• Seiko 5211-296
• Seiko 6324-320
• Seiko 6659-202
• Seiko 6223-759
• Seiko 6672-248