... mini type which features with small size,light weight,easy to carry and flexible control,etc. Features ... the center of attention anywhereLight in weight & Free to controlWith a weight of 18.5 kilos, Robin is ... travel, low-carbon and eco-friendlyPowering from lithium battery, Robin has a single charging time of 4 ... energy of the downhill will return to the battery for recycling use, It can save more energy ...