When you open the envelope delivered I was already a bit suspicious, the battery was not in a Duracell original packaging. On the button cell itself, however, was then clearly Duracell reading precaution nor measured voltage, everything OK. So clean it in the watch and before I knew again what time it is. In mid-February then the surprise: After only four months of operation with the new battery (exchange late October) my clock is again! For comparison: Built by Casio original battery was over 4 years, a manufacturer had not seen it. That is, either installed Casio High-tech button cell, or I was an inferior battery with less than 10% of the possible life palmed. I bet on the latter. A Einzefall? Mondays battery? Possible therefore and because they - worked, two stars - at least briefly. Now a cell of Conrad was installed, let's see how long I had it my joy.
