It uses a 150 watt motor, with variable speed control between 0 and 10,000 RPM. (geekwrapped.com)
Variable speed controls let you have a lot of control over your projects because you'll be able to get just the right speed. (geekwrapped.com)
The Vitamix ® Vita - Prep 3 ®, known for its exceptional power and performance, features a powerful motor, Variable Speed Control and an accelerator tool for consistent, superior results. (fb101.com)