The v fit g series uc upright magnetic exercise bike has a manual magnetic resistance system with a non friction 5kg cast iron flywheel and multi plate solid state magnets there are 8 levels of resistance to choose from which means that even when you become fitter the bike will still be able to offer you motivating workout opportunities the large lcd screen keeps you on track of the statistics of every session and the pulse sensors integrated in the handlebars measure your pulse rate the h