Seiko Cal. 3864 - 860

The Seiko 3864-860 represents an important milestone in Seiko's 1971 lineup. Powered by the 3864 caliber with 31j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-83f4b9404343]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1971

Related Models

• Seiko 4525-472
• Seiko 6697-872
• Seiko 7071-212
• Seiko 6197-695
• Seiko 0779-614
• Seiko 6398-284
• Seiko 4485-426
• Seiko 7077-408
• Seiko 3884-525
• Seiko 6212-123
• Seiko 5249-269
• Seiko 5289-123