Seiko Cal. 3870 - 520

Seiko 3870-520

This Automatic model from 1988 features a 40mm Stainless Steel case. Powered by the 3870 caliber with 35j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-692439d77c52]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
11.2mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
35j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1988

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seikata-wm-692439d77c52