Technical Parameters: Model: KTN-003 (Powered foldable&portable Electric Bicycle)Material of Frame: Al alloy Diameter of Wheel: Front Wheel 16"?.75; Rear Wheel 12"?.75 Type of Battery: Ni-H Battery Battery: 24V 4.2Ah Charger: 110-230V 50Hz/60Hz Charging Time: 4-6H Net Weight: 16KG Gross Weight: 17.5KG Speed: 18km/h The Farthest Running Distance Once: 30KM Type of Motor: High Speed Brushless Motor Power of Motor: 150/200W The Max Loading: 75KG Basic Features: 1. It's a foldable smart bicycle with light weight and compact size. 2. After being folded, it can be put in the rear trunk of your car. So it's a portable bicycle and quite convenient for you to bring wherever you go and won't spare you much room.Furthermore,it's suitable for the short-range riding. 3. With the special 1:1 power assistance system,even if lacking of electricity,it's still quite laborsaving and easiest when you have to pedal by yourself. 4. There are altogether 3 modes of riding for your choice,pedaling by foot,electric motor and intelligent assistance power. 5. The widened seat specially designed according to the somatology makes you,even after a long-time driving, won't feel uncomfortable at all.When riding on the quite rugged road, it can also well absord the impact caused by the jounce. 6. The handlebar specially designed according to the somatology and aesthetics, can minish its press to palm to the furthest. And meanwhile, upgrades the aesthetic feeling of the bicycle. 7. Roasted with two layers' paint which makes the whole bike highly bright&extremely wearable. 8. Available colours: Black, Silver and Blue