One Plus Buds 4 True Wireless Noise Cancelling Buds Anc

Audio Features: They feature 11mm + 6mm dual dynamic drivers and support Hi-Res Audio Wireless with LHDC 5.0.Noise Cancellation: The earbuds offer up to 55dB adaptive noise cancellation.Battery Life: They provide up to 11 hours of playback, with a total of 45 hours including the charging case.Durability: The earbuds have an IP55 rating for water and dust resistance.