Hello softtrain, welcome to Tomshardware. Regarding your Motor Trend Bluetooth headset MX6 that you can hear the person your talking but not them hearing you, I guess the headset is ok but the mic that comes with the headset (is their a mic?) is defective. If this device comes with a software please install it on your PC then go to your Control Panel, under Audio devices their you can check if this thing is working. Cheers.