Master hills and flats on the feature-packed Nautilus U614 Upright Bike. Whether you're a biking aficionado or a fitness novice, you can meet your at-home fitness goals with one of 22 customizable workout programs and 20 resistance levels. This bike features all the bells and whistles you want in a compact size, including heart rate sensors, built-in speakers with an MP3 port, media shelf for your tablet or book, and a DualTrack™ display with LCD monitors that display time, distance, and calories in two different areas so you can view your favorite entertainment while keeping track of your workout. Transfer your workout data via USB to the Nautilus Connect™ website, which features compatibility with the popular MyFitnessPal application to easily track your progress. An adjustable, padded seat, ergonomic handles, and the high-speed, high-inertia drive system with perimeter-weighted flywheel ensure a smooth and comfortable ride. A manufacturer's warranty is included. About Nautilus: Nautilus has been a long-time leader in the home fitness industry, introducing machines and workouts to the home that were formerly only available in well-stocked gyms. They're exceptionally committed to customer satisfaction and stand by that commitment with lengthy warranties on most products. For exercise bikes, treadmills, elliptical machines, and all-purpose home gyms, you're sure to find a Nautilus product to suit your needs. But these machines don't reflect all Nautilus has to offer, as they're also a leader in compact, space-efficient exercise equipment that maximizes the number of workouts available while using just a small corner of your home.