Seiko Cal. 6231 - 959

Seiko 6231-959

The Seiko 6231-959 represents an important milestone in Seiko's 1971 lineup. Powered by the 6231 caliber with 18j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-c1b72a05112d]

Also known as: Monster

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.5mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Silver
Jewels
18j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1971

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