4500mAh High Capacity Last LongerEquipped with a powerful 6800mAh built-in lithium battery, add more than 150%+ power for your iPhone X, effectively extend the battery life. Perfect for traveling, camping, business trip or other outdoor occasions. 4500mAh High Capacity Last LongerEquipped with a powerful 6800mAh built-in lithium battery, add more than 150%+ power for your iPhone X, effectively extend the battery life. Perfect for traveling, camping, business trip or other outdoor occasions. 4500mAh High Capacity Last LongerEquipped with a powerful 6800mAh built-in lithium battery, add more than 150%+ power for your iPhone X, effectively extend the battery life. Perfect for traveling, camping, business trip or other outdoor occasions. Advanced Sync-through TechnologyThanks to the amazing sync-through technology, you can charge your iPhone X and battery charger case simultaneously, and easy to sync your iPhone data to your Macbook, PC or laptop without removing the battery case. 4 LED indicators lights conveniently show you the battery level(25%--50%--75%--100%).