VITKAtronics ER90152 Wireless Bluetooth Sports Earbuds for Running, Sweatproof Workout Music Headphones for Android and iPhone - Black VITKAtronics ER52 wireless earbuds easily connects with all Bluetooth enabled devices such as apple, android, iPhone, iPad Advanced noise cancellation - Bluetooth headset during an intense run or workout, studying an audio book or enjoying music on an airplane Longest play time enjoy with this wireless headphones music for up to 9 hours, while full charge takes only 2 hours Secure comfort fit - soft rubber finish and silicone earbuds that you can tirelessly wear all day True high-definition sound - featuring latest Bluetooth 4.1 CSR technology and apt-x support, enjoy liquid treble and solid bass