This model is the CS-M4, equipped with 20-inch pneumatic tires and a 750W motor, with a top speed of 45 km/h. The battery capacity is 13Ah, which can provide a range of 40-50 km. It has a steel frame with a maximum load capacity of 120 kg. The bright headlight and red taillight ensure safety when riding at night. It also has a 7-speed geared system to adapt to different riding conditions.