The frame uses high carbon steel, which has High hardness and good abrasion resistance. It uses a 350W brushless motor with high speed, long service life, no friction and internal friction,350w positive basalt controller , 48V12A/48V20A lead-acid battery.It can drive 30KM with one full charge and one gears speed and pedal riding. Anti-theft dual remote control, key anti-theft and remote control anti-theft, dual protection, to ensure the safety of electric vehicles.It uses the drum brake ,which is good for maintenance. It meets our daily travel needs. .It uses the drum brake ,which is good for maintenance. For the after sale service, we provide battery and motor 1 year warranty, and other parts 6 months. Welcome to contact us for more details.