Get in shape with the Nautilus T5.18 Treadmill. This motorised treadmill features 12 preset speed based programs, 3 custom programming options and 2 heart rate programs. It has an incline option of 0 - 15% and a maximum speed of 0.8 - 19.3kph / 0.5 - 12mph. The Nautilus T5.18 treadmill features a