Seiko Cal. 3870 - 683

Seiko 3870-683

The Seiko 3870-683 represents an important milestone in Seiko's 1980 lineup. Powered by the 3870 caliber with 24j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-a5554e9f28fb]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
39mm
Case Thickness
13.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
100m
Dial Color
Black
Jewels
24j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1980

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