The MEX-BT5000 is a car stereo head unit equipped with Bluetooth wireless capability. In designing this multifunctional high-class head unit model, the designer clustered all operations on the left side of the unit and employed a 4-way joystick controller for easier navigation. As a result, the driver can control the unit with just the right hand, with no interference with the task of driving. The GUI design linked to the joystick improves visibility, while use of GUI animation also improves ease of use.