Bang & Olufsen Signature Sound - authentic audio performance. Adaptive Noise Cancelling - audio without the background noises. Seamless connection supported by Bluetooth 5.2 with low battery consumption. Up to 6.5 hours with ANC and 20 hours with charging case. IP54 Dust and splash resistant. Ergonomically shaped. Transparency Mode. Brief 20 minute charge provides 2 more hours of playtime. Electro-dynamic 6.8mm drivers. Includes: 4 Pairs of silicone tips (XS S M L). COMPLY Isolation ear tips (Size M). USB-A/USB-C charging cable.