The ifidelity True Wireless Bluetooth Earbuds and Speaker combine True Wireless earbuds and a wireless speaker. As you see, there is no wire connecting the earbuds. Making them true wireless earbuds. The carrying case also doubles as a charging station and a Bluetooth speaker. Once the case is charged it can be used as a portable charger for your earbuds. The case is capable of charging the earbuds from 0 to 100% two times. With over 4 hours of talk time these earbuds are a great addition to any desktop. The ergonomic design of the earbuds keep them in place on the go. Bluetooth working range is 10 meters (33 feet). Speaker Playback time: three hours. It takes two hours to charge the earbuds and speaker from 0 to 100%. The earbuds and speaker have a built in microphone for receiving or making phone calls.