Electric bike using 36V 10Ah lithium-ion battery, fully charged within 3-4 hours, each charge can reach 24-37 miles, enjoy your day s adventure or travel, no worry about battery no electricity. Easily take the battery to home or office for recharging. Adult electric mountain bike is equipped with 350W motor, which can use for your daily commuting, riding on the mountain or winding along the trails. The top speed is 20mph. It will take you there quickly, just press the pedal.  21-speed gear has super climbing ability, wider range of changes and greater adaptation to different terrain. It can maintain relatively safe braking even in relatively harsh natural environments, such as rainy days, mountains, and snow.  High, medium and low speed, which can be converted into electric bicycles, auxiliary bicycles and manual bicycles. You can choose electric auxiliary power base on your needs. Use the throttle to increase speed, combining the three modes would be a better choice. Load capacity up to 300 lbs.