Airwave tech is not a feature which can be switched on or off.
The OWS does not have a eartip & shape like a generic TWS which goes inside the ear cavity, there is a need to direct the sound directly to the ear without scattering the sound.
This is done through an inbuilt tech which we at Noise are calling Airwave.
Airwave uses precise air conduction mechanism to deliver sound directly to the ear.