Jai ref ordered a button battery: RENATA 371. I received a button battery ref: Renata 394, I turned the latter with a letter, I have no answer acompagnement.N'éyant adrssé plusieues protest email never any réponse.Au after 3 weeks I finally received the correct battery which I have not been of much help since I had bought a stack also receiving no answer. A word to salvation !!