Seiko Cal. 3827 - 331

Seiko 3827-331

The 3827-331 is a sought-after Quartz piece from Seiko's golden era. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-abe6a1b3ca8d]

Also known as: Sumo, Bellmatic

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
37mm
Case Thickness
12.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
200m
Dial Color
Green
Jewels
24j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1966

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