Allegro TWS Earbuds & Solar Powered Charging Case allows the user to charge earbuds with the solar panel on the front of the case or connect to USB-C port on the bottom Featuring a True Wireless Stereo connection, auto-pairing and auto power-on for easy use; multi-function buttoms & dual microphones for hands free operation; and works as single or pair. Touch and hold the multi-function button on either side for 2 seconds to activate Siri iOS devices or Google Assistant Android devices. Enjoy playing time of 4 hours on a single charge & up to 18 hours with charging case; and a charging time of 1 hour for earbuds & 1.5 hours for power case; with connection range up to 33 feet. Includes USB-C cable & a pair of extra ear tips. FCC certified.