Vivi Electric Bike Electric Mountain Bike 26″ Electric Bicycles for Adults, 350W/500W Motor Ebike with Removable 36V/48V Battery& Cruise Control and 21 Speed Gears-20MPH & 50 Miles E-Bikes Adults

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【Power Information】This electric bicycle equipped with 350W brushless motor and 36V/8Ah removable battery, speed up to 20 Mph, 25 miles of range. This configuration will provide you with a reliable, safe and stable riding experience.
【21-Speed】3-Speed Chainwheel, 7-Speed Freewheel, in total 21 speeds, uphill and downhill, slow, constant speed, speed up, all can be satisfied. It can be a  mountain bike, also suitable for urban cycling and commuting.
【Unlock speed limit 20 MHP】20 mph electric speed, first adjust the electric gear to “high”, and then press and hold the “+” and “-” keys at the same time for 2 seconds, you will unlock the speed limit. Faster speed can improve the riding experience.
【Removable Cable Port】When you wanna change some accessories as brake power off controller, meter, throttle, you don’t need to remove and open the controller,just directly replace the accessories. This waterproof cable port can help you to achieve it.
【Pedal assist Mode + Propel Mode】Pedal assist is for startup, there is a speed sensor installed at the base of the pedal, turn on the KEY-Disp display, the motor will help you start the bike when you step on the pedal, the start will be more easily and smoothly. Long press “-” button for 3 second will enter the Propel mode. It is for moving forward the bike, the motor will give a power to help you to push forward the e-bike . This feature can make you more convenient when carry the bike.