The Watch Back Case Holder by Eventronic is a specialized tool used in watch repair and maintenance. This handy accessory holds the back case of a watch securely in place, allowing for easy access to the inner workings of the timepiece. Designed specifically for watch enthusiasts and professionals, this case holder provides a convenient way to work on watches without the risk of losing or damaging small components. A must-have tool for anyone looking to keep their watches in top condition.