The Samsung Level U Pro Wireless Headphones with Ultra High Quality Audio (UHQA) technology delivers a true 24bit digital audio experience with up to 2x wider frequency range than standard CD-quality wireless sound. Combined with noise-isolating ear gels, experience vivid, concert hall sound. UHQA is compatible with select Samsung Galaxy devices. The ergonomic around the neck design of Level U Pro provides a comfortable way to keep your music and calls accessible. Ultra-soft, ergonomic ear gels and splash and sweat resistance make it ideal for the active listener. Control call and music functionality intuitively by way of smart magnets in the earbuds, start/pause music and answer/end calls when magnets are connected or disconnected. Package contents include Level U PRO, 3 sets of ear gels (S,M,L), Micro USB Charging Cable, Quick Start Guide NOTE: Try and troubleshoot by disconnecting the Bluetooth and charging overnight. Once the device is fully charged try and re-connect the unit to see if it works properly.