Jawbone bluetooth ear pieces, please read carefully (Emerson Valley MK4)

2 ear pieces, 3 chargers, BUT and this is a big but, although never used, they are useless to me as it needs an app which is no longer available as I believe the company no longer manufactures them. They were not cheap to buy but now are worthless to me however before disposal I was wondering if anyone can do something with them, they are fully charged and turns on but just not connecting as it needs the said app.