Moxpad X90 Hifi Wireless Bluetooth V4.1 Stereo Earphone Sport Running Headphone Studio Music with Mic (Blue) Four Speakers Double Dynamic Bluetooth Headphone Wireless Bluetooth Headphone Design based on ergonomic that never fall out, Flexible neckband auto-adjusts to your head for comfortable using Waterproof material made that not effect when you sport Equipped with the advanced Bluetooth 4.1 technology, compatible with all Bluetooth-enabled devices - phones, tablets, PC and laptops