If there were a racing series for e-scooters, the SO4 Pro would be its street version. The power and torque allow the scooter to move faster than usual, and the engine sound of the SO4 Pro silences every Formula E car. The SO4 Pro features a 500-watt motor and has a range of up to 40 kilometers. Its maximum speed is capped at 20 km/h. The scooter effortlessly handles inclines of up to 18%. It is equipped with disc brakes on both the front and rear wheels and comes with a front light and a brake light. Additionally, the SO4 Pro has a Bluetooth module that allows it to connect to the SoFlow app. The app tracks the distance traveled and provides the user with further information about their rides. A large display on the handlebars shows the rider essential information such as battery capacity, speed, distance traveled, Bluetooth status, and light. Furthermore, the scooter can be locked using the app.