Never used! I purchased at the airport while rushing to catch a flight and grabbed the wrong size. This is for the iPhone XR. Power beyond boundaries: The reliable 2,000mAh juice pack air battery case delivers enough power to extend the life of your iPhone to a total of 31 hours. Total hours of power: (Including the hours from the phone itself) up to 80 hours of music playback, 31 hours of talk time, 20 hours of video playback, or 18 hours of web browsing. Full access to the lightning port: With full access to the lightning port, you can always use your lightning headphones to listen or talk while you charge. Wireless power: The juice pack access battery case is compatible with most wireless chargers. Wireless and USB-C Input: You can recharge the juice pack access battery case wirelessly or through the USB-C port.