Seiko Cal. 3870 - 822

The Seiko 3870-822 represents an important milestone in Seiko's 1967 lineup. Powered by the 3870 caliber with 18j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-5e6eba069f75]

Also known as: Sumo, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1967

Related Models

• Seiko 6139-955
• Seiko 4417-969
• Seiko 6697-643
• Seiko 6151-302
• Seiko 6644-425
• Seiko 4581-754
• Seiko 4455-189
• Seiko 7070-334
• Seiko 5263-443
• Seiko 7089-968
• Seiko 6146-867
• Seiko 5219-224