Seiko Cal. 6331 - 391

Seiko 6331-391

The 6331-391 is a sought-after Solar piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-bd6bc189da7e]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
15.6mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
80m
Dial Color
Cream
Jewels
21j
Frequency
36,000 bph
Power Reserve
63 hours
Year
1978

Related Models

seikata-wm-bd6bc189da7e