Nothing Ear(a) Wireless Earbuds with Active Noise Cancellation, Bass Boost Algorithm and Up to 42.5 Hours of Listening Time - BlackPowerful 11mm Driver: We've made our driver even more compact. With dual power than Ear (2), Ear (a) delivers even deeper bass performance. The extra space gives sound waves more space to vibrate. With two new valves, the airflow inside the knob improves For less distortion and richer overall clarity Smart Active Noise Cancellation: Up to 45 dB, no ear (a) automatically checks for noise leakage between the earbud and ear canal, and then apply more