It comes with a chrome - finish frame and a textured removable back cover. (phoneradar.com)
On the back, you get the same arrangement of the camera, flash, and heart rate monitor you get on the S5, with a plastic removable back cover. (androidauthority.com)
Inside removable back cover, there's two sim tray, a microSD card slot and removable battery slot. (techdroider.com)