This popped up in a recommendations list, if anyone is interested. I wouldn't know what to do with it, but I'm sure plenty of members here would ! http://www.ebay.co.uk/itm/Zenith-Sw...102&pid=100042&prg=1010&rk=4&sd=140920903385&Purchases made through these links may earn this site a commission from the eBay Partner Network
If you want to know what is involved, read this (actually, it is worth reading anyway) http://watchguy.co.uk/teardown-service-zenith-el-primero-defy-calibre-400/