Built with The Sensory Safe Solution for calmer, more predictable appointments. The ultra-quiet rotary motor runs at two speeds — 3,500 and 5,500 SPM — with up to 3 hours cordless. Charges by USB-C and comes with a charging stand. In the box: 10 attachment combs from 1/16 inch to 1 inch, plus oil, brush, guard, and a carrying case.