Seiko Cal. 0717 - 990

Seiko 0717-990

The 0717-990 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-30c2e239eedf]

Also known as: Monster, Helmet

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
8.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1973

Related Models

seikata-wm-30c2e239eedf