The case for Seek TWS earbuds also functions as a charging station. By charging the Seek TWS earbuds in their case four times, you can get up to a maximum of 15 hours of playback time. When the case's LED indicator lights up, it's time to charge the case itself. - Calls, music, and volume are controlled directly from the earbuds via touch controls. - Wireless - Compatible with Bluetooth devices (phones, tablets, etc.) - Four control buttons - Playback time of 4 hours, total playback time with charging case is 15 hours - Includes USB-C cable for charging