Seiko Cal. 6331 - 370

Seiko 6331-370

The 6331-370 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6331 caliber with 32j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-80681d752d37]

Also known as: Arnie

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
15.6mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
28,800 bph
Power Reserve
72 hours
Year
1977

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