Seiko Cal. 6331 - 421

Seiko 6331-421

The Seiko 6331-421 represents an important milestone in Seiko's 1986 lineup. Powered by the 6331 caliber with 24j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-7596f822ae0c]

Also known as: Helmet, Rally

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
14.8mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
200m
Dial Color
Burgundy
Jewels
24j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1986

Related Models

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