Sennheiser Urbanite XL Wireless, Black Wireless Freedom - Bluetooth 4.0, NFC, voice prompts, 3-way-calling, multi-connectivity. Connectivity Technology: Wireless CD-quality audio - featuring the apt-X codec, the Urbanite XL Wireless can connect wirelessly to any Bluetooth apt-X-enabled device Simple to use - intuitive touch control panel on ear cup and convenient connection with two devices simultaneously (phones and computers) Hours of use - 25h of music without recharging, 15 days of stand-by time Peace of mind - 2-years international warranty when purchased from an authorized Sennheiser dealer