Incipio offGRID Samsung Galaxy S7 Battery Case, 3700 mAh Extended Backup Battery Case for Samsung Galaxy S7 - Black Compatible with Galaxy S7 24 hours additional talk time, surfing, downloading and streaming powered by an ultra-thin 3700mAh lithium-polymer battery Priority charging ensures while charging phone with battery case your phone will charge to full first Charge and sync while connected to your laptop Simple and user-friendly snap-on bumper