Keep your iPhone 7/8 charged with this iPhone 7/8 Battery Case. Up to 275% extra power in the sleek travel charger. Apple lightning compatibility allows you to sync or listen to music by plugging directly into the case's lightning port. Turn on the case to listen to music while charging your iPhone, meaning you to never have to worry about lightning port adapters or splitters. Our durable design keeps your smartphone protected from falls and tumbles. Dedicated internal electronics protect your phone from overcharging, short circuiting, and discharging. All while keeping your phone sleek and stylish. If you are not absolutely 100% satisfied with your iPhone battery case, let us know right away! We will do everything we can to make sure you are perfectly satisfied with your purchase. That's the PowerBear guarantee!