MAVER-X4 is a 4 powered-caster-wheel mobile chassis.Adopting the PCW-25 module, it integrates an IMU (Inertial Measurement Unit) and attitude fusion module, enabling high-precision trajectory tracking. Configured with a front swing arm suspension, it outperforms Mecanum and orthogonal wheel chassis in terms of faster attitude response and lower vibration, making it ideal for embodied intelligent system development, control/perception algorithm validation, and human-robot interaction research.