21 Adjustable Workout Levels Total Control Over Your Fitness!This under-desk elliptical doubles as a seated elliptical machine, mini elliptical, and compact elliptical machine. It has 12 speed settings + 9 resistance modes, so you can tailor intensity from gentle rehab to calorie burn. A great under desk pedal exerciser and while sitting exerciser, its perfect for seniors and office workers needing a quick energy boost with work from home fitness gearall while seated! Ultra-Quiet Design Exercise in Silence at Home or Office!This under desk elliptical features hyper-quiet magnetic driving. Its a quiet elliptical machine and low decibel elliptical that runs whisper-quiet, no disruption to calls or focus. As a reliable indoor elliptical trainer and desk side exerciser, you can stay active anytimeno noise, no distractions!