i bought 3 different bluetooth devices in the past and all of then didn't last long not to mention sometimes it won't pair up with my samsung cellphone. for this item all i need to do is plug it to my cellphone and that's it. very convenient to use has a small clip to secure it to your collar. for its price i bought 3 more. one for each (2)car, 2 for me and wife when are walking. reason for 4 stars only? only time can tell how long this will last.