The Otto Three Step Easy Foldable Electric Bike is a 20 inch, Shimano 7 speed transmission system Electric City Bike with the brushless motor and external battery. Paddle assist e-bike using the best 240W motor system, which is coupled with 48V lithium battery, which is exclusive for overvoltage protection. The Strong and lightweight High Carbon Steel Folding Customized Frame ensuring a comfortable fit for all cyclists of all ages and is easier to dismount in heavy traffic. This is the best e-bike for city and commute or for anyone who want to enjoy electric bike. This e-bike will be the perfect partner for city and nearby adventure tours with friends, family or cycling groups.