The wheels adopt aseismatic magnesium alloy that will suit for kinds of terrains.The full-loaded lithium batteries can meet you long time demand and may reusing many times.You can control the trolley by the remote control with in 50 meters .This product is a new model of environmentally friendly scooter that meet international quality standards .We enjoy a good  reputation for our high quality carts in the American,European,and Southeast Asian markets .