Product Features 1、Ultra-thin, 60mm thickness. comfortable for place the hand on the machine. 2、Stainless steel support feet that can hold the dust collector up for a manicure 3、Powerful 15035 dual-ball bearing turbo fan, with strong air volume, low noise and long life. 4、Inside with 2600mAhx4 Lithium battery，charging time 2.5 hours， continuous working time：3 hours . 5、The top cover is a stainless steel cover , which is very convenient to replace the filter, Easy cleaning. 6、Flame retardant battery housing, triple fire protection.