HUAWEI FreeBuds 5i is Hi-Res certified, featuring a wide frequency response, and full-link high-resolution sound for HD audio sources.The FreeBuds 5i do an okay job when it comes to active noise cancellation (ANC), but look elsewhere if this feature is crucial to you. There are three strength settings available via the Huawei AI Life app: Cozy, General and Ultra. Ultra is the only option that makes much difference.The earbuds feature maximum noise cancellation performance of 42 dB. Data comes from Huawei labs.The whole 410 mAh battery of the case and the two 55 mAh batteries in the buds charged from 0% to 100% in just 90 minutes, even faster than the advertised 110 minutes for the case alone. The Huawei Freebuds 5i case does not support wireless charging, though, so plugging them in is mandatory.