Apple IPhone 11 ProMax Smart Battery Case

Designed by Apple In great working condition. A little rough around the edges. Up to 50% longer battery life with iPhone 11 Pro Max Smart Battery Case* * Testing conducted by Apple in October 2019 using preproduction iPhone 11 Pro Max units and software paired with preproduction iPhone 11 Pro Max Smart Battery Case units and software. Video tests consisted of repeated playback of a 2-hour 23-minute movie purchased from the iTunes Store. * All settings were default except: Bluetooth was paired with headphones; Wi-Fi was associated with a network; the Wi-Fi feature Ask to Join Networks, Auto-Brightness, and True Tone were turned off. * All battery claims depend on network configuration and many other factors; actual results will vary.