(Note: Compatible Samsung Galaxy s8 ONLY) Powerful 4500mAh Li-polymer rechargeable battery case can effectively provide 100%+ extra battery life for your Galaxy S8, which is equivalent to add 24 hours talk time or 16 hours web browsing time. 360° comprehensive bumper design and hard-shell backplate, the Trianium Atomic Pro Fast Charging Portable Charger protects your Galaxy S8 from scratches and other daily wear and tear, yet small and convenient enough to fit easily in your hand or in your pocket. Featuring Quick-charge sync-through technology, the battery case allows you to sync your computer without having to remove the case. Simultaneously charge your samsung S8 and battery case together with your original Samsung Stock type-c cable/adapter.

More Power - Featuring a 4500mAh Li-polymer rechargeable battery that can provide 100%+ extra battery life for your Galaxy S8. Equivalent to 24 hours of talk time or 16 hours of web browsing. (Compatible Galaxy s8 2017 ONLY) Durable Design - Protects your Galaxy S8 from scratches and wear and tear due to 360 degree comprehensive bumper design and hard-shell backplate. Unmatched Accessibility - Quick-charge sync-through technology easily lets you sync to your computer without removing the case. Charge your Samsung Galaxy S8 and battery case simultaneously. [ For Optimal Charge, please use your original Samsung stock cable to charge the battery case and your phone. No additional cable is included.]