The upgraded version, Mars 2.0, has been redesigned to offer what customers' evolving demands include such as increased motor power, longer battery life and shorter charging time, spring shock absorber and even easier foldability. The Mars 2.0 also provides users with the amount of traction needed to take on corners at a faster speed without any risk of slipping or sliding. This folding all-terrain e-Bike is built for adventure, with 20-inch x 4-inch fat tires, improving shock absorption, giving better stability, and suspension off-road. It is also lightweight - making it perfect for carrying upstairs or throwing it into the back of your car or truck to take on vacation with you. Besides these, it also comes with a new DIY Pegboard at the back seat that allows you to decide what and how to carry on your ride. The upgraded Mars 2.0 can travel up to 28 mph, getting you to where you need to be quicker, but without sacrificing safety. Traveling up to 45 miles per charge (PAS mode)72.5km on a single charge, . the removable 48V/12w.5A battery comes with a 54.6V/2A charger. It gives you full power in less than 6 hours. The Mars 2.0 also offers mechanical brakes and pedal assistance 0-5. For a folding e-Bike, the Mars 2.0 has a slimmer frame (75lbs) that can fit comfortably in your trunk or be taken on the bus or train if you're commuting. Its 15 inch high step through frame is great for riders from 5'5" to 6'3". Other notable features include an LCD display, alloy wheels and 20 inch x 4 inch fat tires. The Mars 2.0 e-Bike by Heybike features front and rear lights, making them safer to ride in the early morning and later in the evening. This e-Bike also comes with front and rear fenders, to keep your clothes clean. Nonreturnable item: Please be advised that this specific item is nonreturnable once purchased.