Seiko Cal. 3870 - 997

Seiko 3870-997

The Seiko 3870-997 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8801240a2f73]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
13.6mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Cream
Jewels
24j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1968

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seikata-wm-8801240a2f73