product description: dyn30a is one-button folding and ultra-light-weight. the net weight of the wheelchair is only 17kg. the u-shaped integrated elbow process improves the strength and beauty at the same time. imported high performance lithium battery is used in this wheelchair to keep it high standard. the maximum speed is 5km per hour. the theoretical travel distance is 15-20km, and the rated power of the motor is 2x150w. the minimum turning radius is 800mm.