Seiko Cal. 6331 - 870

Seiko 6331-870

The 6331-870 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6331 caliber with 36j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-3dc60a0352f6]

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
37mm
Case Thickness
12.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Champagne
Jewels
36j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1974

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seikata-wm-3dc60a0352f6