. Electric bike(TDP206ailg electric vehicle/25W electric Motor:Brushless motor Wheel diameter:18nches Rated load:75Kg Max.speed:25Km/h Run distance before recharge:70-90Km Lithium battery : 48V*10A, Power:250W Chargers input voltage:110V-240V electric bike,lithium battery electric bicycle 48V lithium battery model,three shift gears small and exquisite, There have one button on the timmingbar,if the bike have any trouble, you only need push the button. it can help you to solve the trouble provisionally