, Dual-mic Active Noise Cancellation:HUAWEI Freelace Pro comes with a converged sound pickup system of three microphones.The large dynamic driver responds with deeper and more effective anti-noise sound at a lower frequency, achieving extraordinary noise cancellation experience. , HUAWEI HiPair* Technology: HUAWEI FreeLace Pro can be paired with the device in just one step with HUAWEI HiPair Technology . You can charge it 5-minute and enjoy five hours of high quality music.*HUAWEI HiPair is only supported on some Huawei and Honor ,running EMUI 9.1 or later. Other devices can use Bluetooth pairing mode. , 24 Hour Battery Life*:HUAWEI Freelace Pro supports up to 24-hour playback. Even with noise-cancellation enabled, it still offers an extraordinary 16 hour listening experience. * The data comes from the Huawei lab test results. , Double Press Switch: HUAWEI Freelace Pro supports to Switch between devices easily. Just press twice on power button and swiftly switch to the last connected device. Bluetooth compatibility: BT 5.2 , 14 mm dynamic driver :HUAWEI Freelace Pro's 14 mm dynamic driver works with an independent low-frequency sound tube to achieve resonance effect, delivering punchier, deeper bass. The delicate diaphragm significantly improves the response capability for clear midrange and melodious treble, true to your ears and heart. , Dimension per earbud : H 26mm X W 29.6mm X D 21.7mm