This Felsa 410/690 Oscillating Weight is a rare find for watch enthusiasts. Made in Switzerland, this mechanical (automatic) movement type is compatible with Bidynator brand and is a perfect fit for your watch. The weight is designed to provide accurate timekeeping and is a genuine part from the brand. The package includes the oscillating weight and is a must-have for collectors or watchmakers. This item is perfect for those who are looking to repair or replace their watch's movement part. Don't miss out on this opportunity to own a high-quality and reliable oscillating weight.