The Nordic Track t 8.9b treadmill features a substantial 4.0 HP AC Commercial Drive motor delivering more than enough power to effortlessly drive the oversized running belt (55cmx 152cm) to a top speed of 20kph (12mph). The maximum incline runs to a respectable 15% to let you prepare your body for challenging uphill routes, & there are 3'' front & rear balanced rollers to provide noise reduction & a longer lifespan of the treadmill. With a 2-sided phenolic deck, the t 8.9b is easy on your joints & it has a quiet, maintenance free Hutchinson J10 stretch belt. For a continuous feedback of essential workout information, the treadmill is fitted with an easy-to-read multi-window LED display, whilst 19 challenging programmes & 8 fitness tests enable you to push yourself harder every time & go beyond your limits. To give you access to individualized, virtual workouts led by world's best trainers who guide you every step of the way, this sturdy machine offers i Fit Coach BLE technology (1-year i Fit Coach subscription included). Heart rate measurement can be easily achieved with dual grip pulse sensors or a Polar wireless receiver with an optional chest strap. Plus, to make every run fun, interesting & effective, the machine is packed with extra features such a 3.5mm audio port, a TV input, Cross Flow cooling fan & dual water bottle holders.