It's not just a smart indoor bike, according to the description, it's the "most technologically advanced, scientifically accurate indoor training bike in the world." Dubbed as the iPhone of training bikes by Men's Fitness magazine, the Wattbike is packed with features that will effectively improve your fitness. It measures the power generated so that you can customize the intensity depending on your fitness goals, as well as 39 other performance parameters 100 times per second including speed, heart rate, and cadence. It also trains you on your riding technique. You get feedback on your pedaling technique in real time and it feels like you're riding a real bike.