This wireless Bluetooth is a must have accessory for music lovers. It offers wireless Bluetooth connectivity with all phones. It features a built-in microphone for hands free calling and delivers quality sound for up to 3 hours with one charge.Amazing FeaturesEnjoy high-fidelity stereo music and clear speech within 10 meters.Intelligent 2-link designConnect your two Bluetooth services at the same time and free switch.Incomparable long standby and working time Intelligent TechnologyIntelligent noise-isolation technologyAway from the noise, fully immersed in the beautiful music.Sweat-proof designEnjoy your workouts without worrying about the earphone working abnormally.Ease of useEasy talkingBuilt-in microphone for hands free calling.Intelligent English voice promptEnglish voice prompt, tell you low power, disconnection, calling number, far connection distance etc.On-cord controlVoice control, songs track, answer / end phone call and play or pause music