Beat Plus Feel the drum sound X880 Next Generation Bluetooth Fredom of hands Wireless (black color) Power Performance / Overwhelming sound , 500 Hours standby time / 15 Hours of continuous talk / Replacing the Speakers HD / 3 modes equalizer (Normal, Bass, Pop) / EQULIZER, VIBRATION ALERT, MULTI PAIRING, HD SPEAKER, 15HOURS, V4.0 BLUETOOTH, CSR apt-X Enjoy the Hi-Fi Sound. aptX codec, 3 mode EQ, HD speaker!! / apt X Codec Bluetooth connection. It is possible to listen to high quality sound. / 3 Modes equalizer - Normal (Classic, Newage) / Pop / Base(Dance, Hip-hop) Effective to listen. Built-in HD sound / Call clear sound quality - CVC(crear Voice Control) Technology!! / Bluetooth version 4.0 - The lates Bluetooth 4.0 / Talk time and Standby time - 15 hours,500 hours , Best performance : X880 Wireless (convenient features) Vibration Alert! Multi Pairing! Connect the two devices - multi pairing. Provide a complete solution. Powerful Vibration alerts / Semi-automatic storage - Using magnetic storage. No line tangling. / Ultra-Lightweight neckband - Shape Memory Alloys / Comfortable fit Light weight