Since my renewed interest in watches I've gone over my watch collection. Many of which have dead batteries. This S11 has given me a problem in that I have no idea how to change the battery. The papers included with the box are weird with many circle papers and instructions all in Japanese. If this battery is more involved than a straight battery change I'll have to let it go to someone who knows how to repair a broken Seiko S11 Think the world watch. Please help.