Choose to charge earbuds with the solar panel on the front of the case or connect to the USB-C port on the bottom! Fast & ultra-stable True Wireless Stereo connection Multi-function buttons & dual microphones for hands-free operation Touch and hold the multi-function button on either side for 2 seconds to activate Siri (iOS devices) or Google Assistant (Android devices) Works as a single or a pair Power level indicator lights Playing Time: 4 hours on a single charge & up to 18 hours with charging case Connection range up to 33 feet Includes USB-C cable & a pair of extra ear tips Product Size: 2" W x 2.5" H Imprint Area: 1.25”W X 1”H