Seiko Cal. 6331 - 478

Seiko 6331-478

This Solar model from 1980 features a 45mm Hardlex-Coated Steel case. With its 20mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-0bd1a5253a46]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
9.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Burgundy
Jewels
21j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1980

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