EXTRA 250% BATTERY LIFEPowerful Li-polymer rechargeable charger case with high capacity can effectively provide 250% added battery life, equivalent to extra 33 hours talk time, 95 hours music, 30 hours video playback, and 28 hours internet use HEADPHONE & SYNC DATA & CHARGE COMPATIBLECompatible with lightning jack ONLY for iPhone 7/8 and traditional 3.5mm headphone for iPhone 6/6s ONLY. You can charge the battery case and your iPhone simultaneously with original lightning cable and sync your iPhone without removing the case 360 FULL PROTECTIONSturdy and all rubberized case provides not only a good grip but also a maximum protection from scratches and daily wear & tears. Raised front lips and hard-shell design protect your phone against bumps, drops, and impacts SAFE & ECO DESIGNThe smart iPhone 6/7/8 battery charging case automatically shuts off when your phone reaches 100% for saving power. For your safety, internal high quality chip protect your phone from over charging, overheating, and short-circuiting 100% MONEY BACK GUARANTEE12 months product warranty and 30 days problem-free money back guarantee from HARDTOAST. Please feel welcome to contact us first if you have any questions and concerns. WARNINGIf the disassembly angle is too large, it may cause damage to the connector!