1.low prie, 2.high quality, 3.faster speed, 4.lithium battery 5. environmental. 1.Feature:High efficiency,High torque to climb,Double wall alloy rimFree maintenance,Wide platform,China factory supply 2.Detail/specification:Voltage(v):DC 24 36 48Power(w):250w 350w 500w 800w Max:1000wSpeed(km/h): ≤45Efficiency(%): ≥82Wheel size:16-28Cable location:shaft centerSpoke specification:D3.0 D4.0Net Weight ...