Keep your iPhone XS Max charged with this iPhone XS Max battery case. Up to 150% extra power in the sleek travel charger. It is equipped with Smart Sync Technology. This lets you sync your iPhone to your computer without having you take your case off. You can also charge your phone and case simultaneously using one cable. Hold the sleek ON/OFF button on the PowerBear battery iPhone XS Max case to turn the case ON and OFF whenever you need the extra juice. Engineered to protect your smartphone from falls and tumbles. Internal electronics are specifically designed to protect your phone from overcharging, short circuiting, and discharging. If you are not absolutely 100% satisfied with your iPhone case with battery, 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!