ADV. Model Y incorporates a fully remastered proprietary 8mm dynamic driver with graphene nano-coating to produce lifelike audio. ADV. Proprietary graphene nano-coating allows the driver diaphragm to be rigid against distortion and maintain the weight of a feather to deliver rich bass response through its increased stroke depth. The resulting audio is more efficient, more balanced, and more transient than most other TWS in its class. Your journey to truly wireless hi-fi begins with the Model Y.ADV. Model Y incorporates a fully remastered proprietary 8mm dynamic driver with graphene nano-coating to produce lifelike audio. ADV. Proprietary graphene nano-coating allows the driver diaphragm to be rigid against distortion and maintain the weight of a feather to deliver rich bass response through its increased stroke depth. Audio turned out to be more efficient, more balanced, and more transient than most other TWS in its class. Your journey to truly wireless hi-fi begins with the Model Y..PZA MORE SPECS