During a press conference in São Paolo, Brazil today, Motorola Mobility officially unveiled the Moto G, a lower-cost version of the Moto X that has interchangeable back panels called “Motorola Shells.” There are also “active grips” and “flip shell” cases for the device.

“We’re setting out sights on the world, and solving what we think is a problem,” Motorola said. “You or your carrier probably paid $500, maybe $600 for those smartphones. Most people in the world can’t afford a $500 or $600 phone. In fact, the average price of a smartphone today in the world is $200. The problem is the experience that smartphones in this class provide is really, really bad…. We think people deserve better.”

It has the same design principles as the Moto X, including an edge-to-edge screen and a curved back. It also has the latest Corning Gorilla Glass display and protection against splashes from water thanks to a water-proof nano-coating.

The phone sports a 4.5-inch screen with a 720p resolution, a 1.2GHz quad-core Qualcomm Snapdragon 400 processor, 1GB of RAM and offers “all day” battery life. It ships with Android 4.3 Jelly Bean and is guaranteeing an upgrade to Android 4.4 KitKat. It ships with 8GB or 16GB of storage.

The Moto G will available with 8GB of storage for $179 in the U.S. unlocked while the 16GB option will cost $199 unlocked.