350W STRONGER MOTOR: Vivi folding bike for adults equipped with 36V 350W high speed brushless motor, faster speed and more stable power than 250W ebike. Suit for hillside, gravel, city streets, back roads With speeds up to 20 mph,it will get you there swiftly. In addition, energy saving system is added to battery, motor and controller, greatly increase the mileage range, Expand battery service time REMOVABLE LITHIUM BATTERY&FULL SUSPENSION: The removable 36V 8AH lithium Ion battery, equipped with smart lithium battery charger can make you ride up to 22-50 miles. You can charge the battery on/off the ebike by your convenience. Full suspension electric bike, front and rear disc-brake design and 7-speed professional transmission system. Whether riding in the city or climbing, will significantly reduce the bumps. the bright LED headlamp are equipped for night riding. ELECTRIC FOLDING BIKE: The adult folding bikes adopts lightweight aluminum alloy collapsible frame for quick folding and easy storage, you can easily store it in any vehicle, which greatly saves space . The rims are made of double-walled Aluminum Alloy to offer greater durability and a faster ride with less drag. Detachable waterproof line design, easy to replace accessories. In addition, the seat/handbar angle/stem's length is adjusted which can bring about noticeable improvements in comfort 3 WORKING MODES: Ebike & Assisted bicycle & Normal bike. With the LED smart meter "+"and "-" button, you can select 3-speed modes of assisted bicycle and ebike. It promises a range of 44-50 miles when riding in assisted mode or 22-25 miles when riding with full power. You can also choose to turn off the power to enjoy the fun of normal bike SERVICE AVAILABLE: Motor, battery, controller and dashboard are guaranteed for one year, so don’t worry about using it. In order to avoid collision and damage during transportation, This electric bike arrives 85% assembled, just need to assemble the front wheel, handlebar and pedals. You can also contact us for installation video. If there any issue with it, don't hesitate to tell us, We will reply to you within 24 hours