Galaxy S7 Battery Case,Lumcrissy 4200 Mah Backup External Battery Charger Case For Samsung Galaxy S7 Rechargeable Case,Portable Backup Power Bank Case with Kickstand (Pink) Slim Body: perfect fit for Samsung Galaxy S7 , back for ergonomic curved design, smooth lines and graceful, full of feel more comfortable. Quality materials: imported PC material, through the international environmental certification, non-toxic, safe and reliable! Plug and Play Double Life: Built original new 4200 mA high-quality polymer batteries, Samsung mobile phones can be doubled battery life, enough power to remove your troubles. Quality batteries intelligent protection: imported batteries, with high energy density, no memory effect, high conversion rate, slow decay, long life and other advantages of high security features. Integrated circuit design with intelligent protection IC, can effectively prevent a short circuit or overtime charge, overcharge and over discharge even under extreme operating conditions, according to the fault errors, which can effectively protect your phone. Supports data synchronization, support for mobile operating system version upgrade.