At AV Solutions we specialize in the installation of monitors to the Mercedes Neckpro Safety headrest monitors ( hard backed ) . We have just installed our standard headrest monitor package to this new G Wagon which includes 2 x inch Piano Black Monitors , Single Disc DVD Player ( built in USB input) & 2 x Cordless Headphones . The headrest conversion does not interfere with the safety system in any way and once installed look factory fitted .