Style meets performance in the ROIDMI S1 Special. This elegant, app-connected smart cordless vacuum cleaner features a high-speed digital motor . Two high- tech brush rollers ensure outstanding cleani tools make for versatile cleaning around the home. The S1 Specials effortless style includes a sleek magnetic wall dock. Experience innovative technology with the Engine-X Brushless Motor. It spi with the Air-X Dust Separation Technology, the ROIDMI S1 Special delivers a continuous powerful performance with no loss of suction! The S1 Special equipped with ROIDMI Filtration system, captures 9 dog and cat allergens, down to 0.3 microns. This means that the S1 Special is equipped with a small air purifier ensuring the exhaust air is cleaner than the air it draws in.