This is the Extrbici XF770 mountain bike which is available in black/green, black/white or black/red colours which is suitable for riders that are 5ft 5 inches to 6ft 3 inches and up to 330lbs in weight. It has a folding frame which means that it is easier to store and transport. It has a 500w high power brushless motor and there are three power modes. It has a 48v 10Ah Panasonic battery which is hidden in the frame of the bike. It has Shimano 370/27 speed transmission with smooth and accurate shifting to work in lots of conditions such as mountain road. There are hydraulic disc brakes to keep the rider safe and the suspension means that you will not feel so many bumps on the rough roads.