➤ 3 IN 1 FUNCTION: The backup battery can be uses as a cover case, mobile phone holder and a external battery charger. High class material to protect your iPhone from scratches and other daily wear and tear. ➤ 4200mAh HIGH CAPACITY: The powerful 4200mAh built-in lithium polymer adds more than 120% power electricity to an iPhone 7/6s/6 Plus ➤ CHARGING AND SYNC: You can sync your iPhone 7/6S/6 Plus to your Mac book, PC or laptop without removing the charger case. You can charge your battery case and iPhone simultaneously. ➤ HIGH QUALITY: High quality materials offer maximum protection from bumps and hard-hits for the back and sides. This battery case is is more endure scratches and scuff marks more than a regular case. ➤ 100% MONEY BACK GUARANTEE: Purchase Mbuynow battery shell products, We are committed to up to 12 months warranty.