Manufacturer XUEQI. 【High Efficiency Filter】 : Cordless Vacuum Cleaner can Realize Double Filtration. Distributed With 2 Fine Filters, no Suction Loss or Dust Clogging. 【Purple Light And Pulsation Function】 : Mattress Vacuum Cleaner Adopts Purple C-253.7nm Wavelength Purple Light, Which can Directly Penetrate Mites and Effectively Clean, the Mattress Cleaner is Equipped With Dual Pulsating Pads, High Frequency Vibration Brings Deep Dirt to the Fabric Surface.