NNOVATIVE ERGONOMIC DESIGN: With soft smooth silicone gel surface, this Bluetooth headphone is designed to naturally fit the contours of your ear. Different sizes of earbud tips are provided to guarantee constantly comfortable feeling. UNBELIEVABLE EARPHONES SOUND QUALITY: Top-notch speakers and the ultimate in Bluetooth connectivity (4.1 and apt-X) work together to create a memorable listening experience. Noise cancellation makes you enjoy a clear sound in noisy occasion and Powerful rechargeable battery provide 5 hours of Talking/Playing time or 175 hours of standby. REAL LEADING TECHNOLOGY: Aura Bluetooth headphones defines elegance and functionality, and are equipped with Bluetooth 4.1 + EDL in headphones 60% than the wireless competition + CVC 6.0 intelligent noise cancelling. UNIVERSAL DEVICE COMPATIBILITY: This headphones are compatible with most Bluetooth-enabled devices & apps. Ideal for iPad, iPhone, iPod Touch, Android Smartphones, tablets, Bluetooth-enabled music players and any devices with Bluetooth connection. Please make sure not many applications are running in background on mobile phone. This may cause interference in bluetooth connections and may not give best results. The maximum bluetooth range is 10 meters. Also these earphones needs to fully charged on first use.