Seiko Cal. 6631 - 558

Seiko 6631-558

The 6631-558 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-3dbd89014599]

Also known as: UFO, Golden Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
10.9mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
70m
Dial Color
Navy
Jewels
28j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1997

Related Models

seikata-wm-3dbd89014599