There are four versions of the Ingy (five with the small version of the normal Ingy, in white dial or black dial). There are the normal Ingy, the chrono version (both in steel), and the Ingy AMG, normal and chrono (in Titan, with nylon brazalet). The AMG versions go both with the same case back, with the Mercedes AMG symbols.
It could be that they made the wrong picture, or just that the makers used the normal Ingy case back.