Less pollution to the environment with the lithium battery Special frame design better for the elder people Battery: 36V/10AH LithiumMotor: 250W R/D brushless Frame :Alloy 6061Fork: RST adjustable suspension forkGears: Shimano Derailleur 7 speedTyre & Rim: 700*38C , Dual Wall AlloyBrake : F/ V brake, R/Roller brakePAS:control panel TF712 lithium electric city bicycle