Use the juice pack battery case with any Mophie 3993JPSGS8BLK charge force wireless accessory and enjoy effortless wireless charging at home or in any vehicle. The juice pack battery case works on virtually any other wireless charging system, including those found at airports, coffee houses, and in many new cars. High-impact protection features internal rubberized support pads inside a hard-shell case built to exceed military standards for protection. The low-profile design is light-weight with raised corners for added protection against scratched and cracked screens. Forward-facing speaker ports amplify and redirect sound out the front of the case.