Concerning this item Compact and lightweight: With its small size (3.7 × 2.5 × 0.59 inches), this power bank is ideal for keeping your iPhone charged while traveling because it fits neatly in your pocket or bag. 5,000mAh Capacity: Your iPhone 14 Pro Max can play videos for up to 19 hours thanks to its strong 5,000mAh battery. Our top priority is your safety. For a safer charge, it is outfitted with Negative Temperature Coefficient (NTC) sensors that can measure temperatures up to 7,200 times per hour. Charge While Recharging: You can charge your iPhone without waiting for the power bank to be fully charged by doing so while the Anker 321 Magnetic Battery is recharging. What You Receive: Welcome guide, our Anker 321 MagGo Battery (PowerCore 5K)