In this video I show how to remove the bezel and crystal in a citizen eco-drive in order to get to the movement. There is no way to access the movement through the back so it has to be removed from the front of the case.

Best Case Knife to use: https://amzn.to/35y132C

This bezel removing tool is the best way to go https://amzn.to/3dDyx4E I have searched ebay and other websites and found this one to be the most inexpensive.

If you are new to watch repair and have no experience, but want to learn how to repair quartz watches. I have written an ebook that can help https://www.amazon.com/dp/B07QYGWSMP. Please note that this book is for someone that has no experience in repairing watches.