Product Description--Brand new and high quality.--Compatible with most cellphone and devices with bluetooth capabilities.--High quality soud with HD speaker and enhanced BASS effect.--CD quality sound with apt-X codex support.--Comfortable、flexible and light .--Easy to handle ear set with magnetic properties. Product Features--Chip: CSR 8645 V4.1 Breakthrough exclusive technology doubles Soundbeats QY7 --Playtime to a solid 4 hours--SignalPlus for skip-free music outdoors. Use your music device left/right side、 above/below waist、 doesn't matter with SignalPlus.--PureSound In-ear white noise and listener fatigue reduction. Eliminates the white noise and delivers a clean audio experience offering hours of pure enjoyment.--Sweat-proof、 Durable design、 Onscreen Battery Meter、 Up to 4-6 hours of Talk/Playing Time and 150 hours Standby Time.--High-fidelity stereo music and clear speech、 You can begin enjoying CD quality stereo sound instantly. Product technical parameters:--Bluetooth version: V4.0 compatible V3.0、 V2.1、 V1.1--The chipset: CSR/ISSC--Send power: Class2--Send frequency: 2.4 GHz--Long transmission distance: More than 10 meters--The talking time: 3-4 hours--The standby time: 120 hours to 120 hours--Support the file format: Easy - X、 A2DP、 AVRCP、 HSP and HFPPackage Include:1 * Bluetooth Headset