How do I turn on Noise Cancellation on my StreamBuds ANC Charge?

Active Noise Cancellation (ANC) On / Off and Transparent Mode: 

Long press LEFT Touch Sensor to cycle through the following modes: TRANSPARENT MODE > ANC ON > ANC OFF.

You will hear a voice announcement telling you which mode you are in: ‘Transparent Mode’, ‘ANC On’ or ‘ANC Off’. The LED light will glow WHITE while either Transparent mode or ANC mode is being used.