The Serafim S3 CarX Edition is a mobile gaming controller created in partnership with CarX Technologies, specifically designed for racing games. It boasts a lightweight and sturdy build, featuring a race car-inspired aesthetic with a black and red color scheme. The controller is compatible with both iPhone and Android devices, accommodating phones up to 17.9 cm in length. However, it has significant drawbacks, including compatibility issues with thicker phone cases and a button layout that may lead to accidental presses during gameplay. While the controller performs adequately in games like CarX Drift Racing 3, it feels less responsive in others, such as CarX Street. The price point is another major concern, as it is considered high compared to similar controllers from established brands. Additionally, the inability to remap buttons and the subscription model for its app further detract from its value. In summary, while the S3 CarX Edition has a visually appealing design, it ultimately falls short in performance and value for money.