1 in terms of build quality poor oneplus bullets wireless z was 10 times better then this price was same of this but that was more comfortable around your neck the quality of rubbing so good but in this one you will find no difference between oneplus and any other brands neck band2 connectivity i bought it recently 2 days back and im already facing connectivity issue after detaching these ear burds it should be auto connect to your phone but sometimes its not working also it