Seiko Cal. 3860 - 720

Seiko 3860-720

Released in 1988, the Cal. 3860 with design code 720 was part of Seiko's domestic market collection. Powered by the 3860 caliber with 31j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-ab01fd48a9f5]

Also known as: Turtle, Golden Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
45mm
Case Thickness
11.1mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Black
Jewels
31j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1988

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