They also have really good noise cancellation. Overall its my fault for not noticing until after the return period ended, but I was really disappointed Amazon would ship mismatched shoes and also ultimately not help me resolve the issue. I have nothing to fault the black pair on really. That is very disappointing as my old shure psm300 did. Ive opted to let CDPR keep my money and not ask for a refund. 5 wide work boot, and a 10 or 10. Let me start by saying that I own a pair of Klipsch KG4s and a Harmon Kardon Onyx studio 3 and a Sonos and Bose speakers. My 2nd pair and still a FAIL. With a cascade cable, two speaker phones can be cascaded together for relatively large meeting room, and our 15-person conference went well using daisy-chain mode. No tiene un indicador de batería, entonces no se exactamente cuanta batería tiene o si debo cargala antes de salir.