Seiko Cal. 3870 - 757

Seiko 3870-757

This Hand-Winding model from 1979 features a 39mm Two-Tone case. Powered by the 3870 caliber with 20j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-1209d1d18ced]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
39mm
Case Thickness
8.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
White
Jewels
20j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1979

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seikata-wm-1209d1d18ced