Balance worked 1/2 day (2 measures), and then can not connect bluetooth and also impossible to add other users. I definitely would not recommend this balance users to android and I am very disappointed because on paper it seemed fine. But unfortunately in practice it does not show up to the task and for that price it is unacceptable that the Runtastic quality of service leaves from the sale of products that are not working. Especially apparently I'm not the only person to have this problem.