2-in-1 Auto & Manual Modes Hoduio elliptical exercise machine offers a customizable workout experience with a 15-level Manual Mode and three preset Auto Modes (P1-P3). You can customize your workout intensity to match your fitness goals. The pedals move forward and backward, engaging different muscle groups for a full lower-body workout. Low-Impact & Zero Pressure This under desk elliptical is designed for smooth, effortless movement, promoting blood circulation, strengthening lower body muscles, and enhancing joint flexibility all with minimal strain. Ideal for office workers, seniors, and individuals recovering from leg injuries, it offers a gentle yet effective way to stay active while seated. Whisper-Quiet & Portable Designed with advanced silent technology, this leg exerciser while sitting for seniors provides a smooth, whisper-quiet workout, even at high speeds, so you can exercise without disturbing coworkers, family, or sleeping babies.