It is stated briefly on the manual that the Ozone Onda 3HX is compatible with the Mac. You just need to configure a few things in the System Preferences.
First, just connect the headset as if you were connecting the headset to the PC – Onda 3HX Quick Start Guide.
Open System Preferences and then on the hardware section choose Sound
In the Ouput tab, choose the USB Headphone Set that is appearing
And you do the same thing on the Input tab
Done. Now you can hear and talk through the headset with your Mac.