True Wireless Stereo connection. Auto-Pairing and Auto Power-On. Touch controls & dual microphones. Voice Control with activation of Siri (iOS devices) or Google Assistant (Android devices). Works as a single or a pair. Review power level on a connected device in upper-right corner of screen. Playing time: 4 hours on a single charge & up to 13 hours with charging case. Charging time: 1 hour for earbuds & power case. Includes USB Type-C cable. FCC certified. Size: 2-3/8" x 1-3/4" x 1"