Seiko Cal. 3864 - 647

Seiko 3864-647

The Seiko 3864-647 represents an important milestone in Seiko's 1973 lineup. Powered by the 3864 caliber with 22j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-96570c264db3]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
45mm
Case Thickness
14.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
170m
Dial Color
Silver
Jewels
22j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1973

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seikata-wm-96570c264db3