With NFC and Bluetooth, Sony's WI-C300 earphones offer super sounds and comfortable all-day listening. Take hands-free calls with ease and have confidence they'll keep going with a long-lasting rechargeable battery. Wireless Connection Immerse yourself in the music without the use of cables by using the NFC One-touch feature. Access your music collection via your NFC-enabled device using its quick and seamless connection and simply hit the play button. If your device does not have NFC set-up, then you can easily connect via Bluetooth. Hands-free Calls Handle your calls effectively with the built-in microphone. Control music playback and volume, take calls, or activate your smart phone's voice assistant from the simple buttons on the in-line remote. Comfortable Listening With the connecting wire sitting behind the neck, the WI-C300 are designed for comfortable, all-day listening. Long Listening Power Listen cable-free for up to 8 hours of battery life, and enjoy your commute or exercise without the restrictions.