Huawei FreeBuds 6i Earbuds Features: Noise Cancellation: Features an intelligent dynamic noise cancellation system 3.0 (ANC 3.0) that adapts to the surrounding environment. Battery Life: Offers up to 35 hours of listening with the charging case, and 8 hours of continuous use on a single charge for the earbuds (with noise cancellation turned off). Fast Charging: Just 10 minutes of charging gives you about 4 hours of listening. Sound Quality: Equipped with 11mm dynamic drivers certified with Hi-Res technology for a powerful audio experience. Condition: Used