Don't buy the BirdBike ebike from Mashable (or elsewhere). My ebike stopped working after less than one month of use, but a few days after the one month refund limitation. Their customer service refuses to refund the ebike and instead wants to send me parts for me to take to a shop to get fixed. I have no way to commute to work other than Uber or bus now. The BirdBike ebike is defective. I wish I had spent more on a reliable ebike from a reputable company.