Seiko Cal. 0731 - 791

Seiko 0731-791

The 0731-791 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-9451c941e323]

Also known as: Monster, Sumo

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
9.6mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
30m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1995

Related Models

seikata-wm-9451c941e323