Smart desk bike designed for leg and arm recovery cycling exercise. Stimulate and improve blood circulation for leg , arm and whole-body , especially good for the elderly. Compact ,portable, foldable and lightweight, can be used in office, at home or anywhere you want . Adjust the tension by screw the knob , easy to use ,and enjoy a wide range of resistance . LCD displays exercise time, count of revolution, revolutions per minute(RPM),calories burned 4 extra large anti-slip feet make the bike more stable to use,crank wrapped with heat insulation foam to prevent scald,adjustable strap fit for different size of feet,high quality for long time use .