JOBOBIKE ASTRA E-BIKEJOBOBIKE Astra High performance E Bike for speed JOBOBIKE Astra is equipped with 27. 5" narrow tires and automatic sensing brake lights, giving you a very comfortable riding experience. It also provides pedal adaptive power assist technology, which can increase riding speed and reduce effort, especially on slopes or long distance riding, making it very suitable for commuters, fitness enthusiasts and leisure riders.