Seiko Cal. 3870 - 670

Seiko 3870-670

The 3870-670 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-c3f0b4fa0d1c]

Also known as: Bullhead, Helmet

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
11.0mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
140m
Dial Color
Burgundy
Jewels
25j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1999

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