Seiko Cal. 4431 - 288

Seiko 4431-288

The Seiko 4431-288 represents an important milestone in Seiko's 1985 lineup. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-239aa44e14f6]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
36mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Black
Jewels
33j
Frequency
28,800 bph
Power Reserve
62 hours
Year
1985

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