STRONG 350W GEAR MOTOR- Rear hub 350W motor, providing strong driving force, provide enough energy for your daily commute, cruise in the mountains, or ride along your favorite trails. The default factory maximum speed:20 Mph. (If you need higher speed, please adjust according to the instruction.) Power:Pedal assist on-demand and throttle. Rear Derailleur:7 Speed SHIMANO.

POWERFUL REMOVABLE BATTERY- 36V 10AH Lithium Cell. Charging time:6-8 hours. Display:36V LED Display, Distance per charge:21-40 miles. With battery lock and power lock function. One key repair function, plug SM-5Y, 36V dedicated (rated voltage not universal)

NO RISK SHOPPING- Each bike comes with a 18 months warranty against manufacturing defects in materials or workmanship on its frame, battery, motor, controller, and display. Original Batteries are warranted to be free from defects in material or workmanship for a period of 18 months from the date of purchase as follows:full replacement during the first 12 months, while replacements needed during months 13-24 are prorated as per this schedule.