Heybike Mars Electric Bike Foldable 20 X 4.0 Fat Tire Electric Bicycle with 500W Motor 48V 12.5AH Removable Battery Shimano 7-Speed and Dual Shock

500W Brusheless Gear Motor
Removable 48v 12.5Ah lithium battery
Up to 37 miles（pure electric）48 miles range per charge (pedal assist)
20mph Top Speed
Shimano 7-Speed
20″ x 4.0 Puncture resistant fat tire
Dual Shock Absorber
3 Working Modes