D4S with 20-inch wheels and enhanced rear suspension, this electric commuter bike handles rough rides beautifully. Front and rear shock absorbers is optimally designed for both electric and manual cycling – and everything in between. D4S can folds in three places and only takes about 10 seconds to fold and unfold. It can easily be stored in a car trunk, taken in elevators, offices, etc. Aluminum frame is ergonomically designed to be both lightweight and durable for increased riding efficiency, mobility, and safety. Equipped with a Shimano 6-speed Transmission System for fast and reliable gear adjustment. Select the best gear for the job and experience D4S’s light, effortless riding. Advanced High-efficiency DC Brushless Motor is powerful enough to ride completely pedal-free if you choose so. The rear-hub motor provides the traction you need no matter the environment. With the slick yet grippy tires, the D4S will really take you wherever you want to go, however you want to get there!