Indulge in a seamless personal audio experience with the Sony WH-CH500 wireless headphones. Enjoy detailed and dynamic sound from 30mm dome drivers, combined with the freedom of wireless connectivity thanks to Bluetooth and NFC One-touch. Keep your tunes playing throughout the day. A built-in Li-ion battery delivers up to 20 hours of wireless power and is rechargeable via Micro USB. Wirelessly stream your favourite tracks with a Bluetooth connection, by pairing your smartphone or tablet. Adjustable headband. 30mm driver. 10m range. Compatible with universal smartphones. Batteries required 1 x rechargeable battery (included) . Rechargeable battery. 20 hour battery life. 270 minute charging time. In the box: Micro USB cable. Model number: WHCH500L. CE7.