Intelligent dynamic noise cancellation, Cancel out the noise, dive into the beats, Voice hear-through, always stay connected, Feel the music with HUAWEI FreeBuds Pro, Immersive sound, inspiring style, Cut Down the Noise from Inside and Outside, Adopting the Hybrid Active Noise Cancellation Technology, the inward-facing and outward-facing microphones detect the out-of-ear and in-ear residual noise, and then the dynamic drivers generate accurate anti-noise signals. Achieving up to 40 dB1 noise cancelling effect, HUAWEI FreeBuds Pro allows you to experience the tranquillity and purity, Intelligent Dynamic ANC, Read the Surroundings, Optimize Noise Cancellation, Recognizing the ambient sounds intelligently, HUAWEI FreeBuds Pro switches the noise cancellation mode accordingly for a more suitable hearing experience, Ultra Mode: Lay back with deeply enhanced noise cancellation when traveling. Lose yourself in the music and stay away from the disturbance, Cozy Mode: Keeps you focused by reducing noises from paper flipping, typing, computers and occasional conversations in the workplace, libraries and other quiet environments, General Mode: Enjoy the immersive music or game sounds in bustling streets or crowded cafés as the ambient noises are greatly reduced, Let the Sound Through, Make the Voice Clear, o need to take off your earbuds. Just a long press, you can switch to awareness mode and reconnect with your surroundings. The unique Voice Mode reduces the ambient sounds to make human voices stand out. So you don't miss the airport broadcasts or a quick chat with friends passing-by, Dual-Antenna, Seamless Connection, Smart Control at Your Fingertips, The highly sensitive sensor responds accurately to your demands. With swipe, press or pinch, you can turn up or down the volume, take calls, or change your music easily. Smart interactions, easy to control, With noise cancellation turned-off, a single charge brings you up to 7-hour listening, and up to 30 hours when coupled with the charging case. You can also use your smartphone or tablet to reverse-charge the charging case while you are on the go.