Bluedio T6S Bluetooth Headphones Active Noise Cancelling Wireless Headset for Phones and Music with Voice Control - RedKey Features...All Titanized 57mm Drive Units; VFT-Vector Flow Technology.ANC effectively isolates ambient noise; Cool design, burning passion.Bluetooth 5.0, lower power consumption, longer transmission distance, more stable.Strong APP features, voice interaction, music, burn-in e..