HR Nivastar Mainspring G189 for Omega caliber 690 - Alloy

HR Nivastar Mainspring G189 for Omega caliber 690 movements, alloy, new in envelope. See images for precise mainspring specifications and further helpful information. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.