High Version with resistance adjustment.It is a new product with absolutely no damage.Built with a wide base and low stance for unshakable balance. Features 4 adjustable antislip rubber feet to even out any uneven flooring.A switch with fine-tuning resistance that can be adjusted to suit your resistance, meet your specific needs about resistance & speed; Handle bar mounted resistance controller easily lets you adjust resistance.Maximum noise-reduction magnetic wheel roller, designed with heat dissipation fan; External flywheel facilitates smooth and efficient pedaling action. Hooks up to just about any bike, including road and mountain bikes with a 24?C28or 700c wheel.Smooth operation: This low-noise magnetic turbo gives you a quiet exercise environment. Please note that the noise/friction sound comes from the friction between the wheels and the trainer. Our indoor bike trainer itself doesn??t contain any noise-causing parts.Space saver: The foldable design renders this magnetic bike trainer rather simple to store without occupying much space when not in use, it can be slid into any narrow place in your room. Its collapsible stand also makes transport a breeze.