Material: 40dB hybrid active noise cancellation made of aluminum. 99% of background noise can be blocked out. Calls can be made clearly even in noisy environments thanks to 3-mic noise cancellation. two modes of transparency. Low Latency Audio & Video for Gaming USB Type-C 11mm Ultra Dynamic Sound Controllers as a charging port Bluetooth 5.2: The Xiaomi Flipbuds Pro have Bluetooth 5.2.