SONY WF-LS900N Battery Life: 20hours, Noise Cancellation, TWS Bluetooth Headset (Beige, True Wireless). 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. 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. The world's smallest and lightest, noise cancelling, Hi-Res Truly wireless headphones. Multi-point connection lets connect two devices at once. IPX4 water resistant protection against the sweat and splashes. When call comes in, your headphones know which device is ringing and connects to the right one automatically. You?ll also be able to quickly switch your headphones to either of the two devices at the touch of a button. With WF-LS900N, you're always connected. Wear them comfortably around the clock, staying in touch with people and places without having to pause your playlist.