The electric bicycle's design is similar to the first prototype revealed by the company. The electric bicycle is a tribute to ‘Serial Number One’, the nickname for Harley-Davidson’s oldest known motorcycle built in 1903. The company has now opened pre-bookings for the model. While half of the model units will be made available for purchase in the US, the other half will be offered in Europe. Deliveries of the bicycles are expected to commence later this year.