Sony WF-1000X Truly Wireless In-Ear Noise Cancelling Headphones - Black Wire free, noise free, stress free No wires, no problem - just industry-noise cancellation tailored to your environment in a minimalist design with smart features. Compact design, clear sound, comfortable fit Fine sound from a tiny 6mm driver inside compact headphones that sit comfortably and securely in your ears. Small but perfectly clear A tiny 6mm driver sits inside the headphones to deliver clear sound. Built to stay put and keep playing An ergonomic ear hook keeps your headphones in place, and the internal antenna and fitting supporter keep the signal strong for constant streaming. Adaptive Sound Control Smart Listening by Adaptive Sound Control automatically detects your activity, then adjusts ambient sound settings to you. Travelling Take trips without interruption and lose yourself in music with no background noise. Walking Be aware of everything around you, from street to office, while still enjoying music. Waiting Hear important announcements while you wait, with reduced background noise. Sony Headphones Connect Download the APP to use Smart Listening by Adaptive Sound Control, control your ambient sound settings and adjust the sound levels with the Equaliser. Equaliser Find your perfect sound tone for every song from the presets, easily customisable to your preference with the Sony | Headphones Connect APP. Available from October 2017. Tailor sound to you Sense Engine gives you the power to tune in and out of your music at a touch. Easy hands-free calling Conversation flows freely with easy, hands-free calling. Leave your phone where it is, just speak with a click. Charge and carry case No need to worry about battery life, just place your headphones in the carry case to charge on the go. Auto on / Auto off Automatically turns on and off to save battery when not in use. Up to 9h battery life Enjoy up to 9 hours of battery life - with up to 3 hours of charge in the headphone and 6 hours within the chargeable carry case. Features: Industry-leading wireless noise cancellation (please see below product description for disclaimer) Chargeable carrying case for up to 9 hours battery life (3 hours battery life and 2 x 3 hours charges with case) Truly wireless Hands-free calls, listen free from wires and unwanted background noise with industry-leading noise cancellatio Smart auto-settings to optimise listening settings automatically based on user s behaviour Connection strength may fluctuate depending on the environment, and the specification and/or settings of connected devices such as smartphones, WF-1000X connectivity can be improved by switching the Sound quality mode setting from Priority on sound quality to Priority on stable connection within the Sony headphones connect companion app, available for Android or iOS devices