Prodeco V3 Mariner Seven 8 Speed Folding Electric Bicycle, Pure White Gloss, 20-Inch/One Size SRAM X5 8 Speed Mid Derailleur SRAM X7 Twist 8 Speed Shifter and Avid BB5 Disc Brakes Front FSG 36V 300 Watt Motor 38.4V 9Ah LiFePO4 24 Cell Battery 18 MPH and 25-35 Mile Distance