Motor Type:48v 500wRear Geared Hub MotorBattery Voltage / Amp Hours / Watt Hours:48v / 14ah / 672whBattery Chemistry:Lithium Nickel Cobalt Manganese (Li-ncm)Estimated Charge Time:4-6 hoursEstimated Min And Max Range:30 50 Miles (Depending On Riding Style, Terrain, Rider Weight And Pedal Assist Level.)Display Type:Backlight, Monochrome LCDDrive Modes:Cadence Sensing Pedal Assist, Trigger Throttle, Walk ModeTop Speed:25mph With Pedal Assist, 20mph Throttle Only (Depending On Riding Style, Terrain, Rider Weight And Pedal Assist Level.)Frame Material:6061 Aluminum AlloyGearing Details:Shimano TY300 7 SpeedShifter Details:Shimano TX50 7 SpeedFreewheel Details:Shimano TZ500 7 SpeedCranks:52Tx170MMBrake Details:hydraulic disc-brake, 160mm RotorWheel Size:26x4.0