Dual-mic Active Noise Cancellation: The Huawei Freelace Pro has a three-microphone converged sound pickup system. In order to achieve an exceptional noise cancellation experience, the large dynamic driver responds with a deeper and more effective anti-noise sound at a lower frequency. HUAWEI HiPair Technology: This technology allows the Huawei FreeLace Pro to be paired with the device in a single step. You can listen to high-quality music for five hours after charging it for five minutes. Only certain Huawei and Honor devices running EMUI 9.1 or later support Huawei HiPair. Bluetooth pairing mode is available for other devices. 24-Hour Battery Life: The Huawei Freelace Pro can play for up to 24 hours. It provides an amazing 16-hour listening experience even with noise-cancelling turned on. The Huawei lab test is the source of the data.