... tireSpecifications1.voltage:60 v 2.wattage :600 w 3.controller: 12 pipes 4.max.speed: 50 km/h ... charged.Warranty Parts:1: Battery,motor,charger and controller have one year guarantee,namely replace new parts ... one year,can replace new parts for free.3: Speedhandle,brake handle,power lock,display,converter, ... 2: Damage caused by self-repair, and modification.3: Failure caused by user's improper storage or ...