The world's smallest and lightest, noise cancelling, Hi-Res Truly wireless headphones* Disclaimer in description These Sony headphones give you the best of both worlds: natural ambient sound when you want to interact with your world high-quality noise cancelling when you need to focus. Enjoy High-Resolution Audio Wireless and crystal-clear phone calls on these Bluetooth headphones. Smart features deliver an effortless listening experience! Speak-to-Chat will automatically pause the music when you start a conversation, the earbuds include intuitive touch control and more. Up to 20hr battery life and IPX4 water resistant, Bluetooth effective range 10m Included components: WF-LS900N, Charging Case, USB-C cable, arc supporters, operating instructions, reference guide Multi-point connection lets connect two devices at once IPX4 water resistant protection against the sweat and splashes