Alan32 828 Posted September 25, 2020 Hi Guys and gals I know that Seikos have a CA button to "short" to the battery after changing it to reset the Chronograph, does anyone know how to do this with Miyota Os20 movement and does any one have any idea about Baume and Merciers as I have a Formula S which keeps great time but the chrono centre second and minute hands won't stop! I've tried the web and Baume themselves and have got nowhere , Help! Share this post Link to post Share on other sites