It was in this case a large workload, two button cells of a particular type rauszusuchen the Internet and without fuss to get the quantity ordered in perfect condition sent promptly. Just such small stuff is very complicated to look at the store and then often also very expensive - if you get at all the required. A bad habit of button cells, it is also to offer 10 types unterschioedliche in a blister, from which you then - if at all - may need only two - the rest ends up in the battery waste - complete nonsense!