Currie EZip Trailz Step Thru Women's Electric Bike Women's electric comfort bike equipped with 450-watt DC Earth magnet motor and 24-volt rechargeable battery Powered by sealed lead acid (SLA) battery pack that can be removed for charging or swapping; 15-to-22-mile range pedaling, and ten-to-15 miles without pedaling 15MPH top speed, depending on rider weight and terrain; patented Currie Electro-Drive system with Shimano rear derailleur, SRAM grip shift, and Shimano seven-speed freewheel 66-pound low step-through, high-tensile steel frame; 240-pound rider weight limit Includes limited 90-day manufacturer's warranty