I bought this with high hopes as online stores were expensive for similar models, and none of them had a 9v option. I should say this.. it did NOT work on my Nokia 3650 or 3595, The box says it will only work with Nokia models. 3200, 3300, 8200, 8800 and I also tested on a 5100 series and that worked.. However those arent the phones I need it for.. I want it for my 3650. =(Its not the product that is bad, or the idea.. it is Amazons for not properly marking that this will not work on any other model besides whats listed! Aside from that, I could see many good uses in this product!