Steel mesh cyclone dust - Solve the problem of dust backflow and keep your room away from the dust with Deerma portable vacuum cleaner. Dust-proof cyclone isolates dust and gas preventing dust from flowing backwards with reasonable air duct Instant suction - Large 1.2L dust capacity absorbs the dust particles from floor, bed, sofa, keyboard and carpet thus effectively ensuring no flow back of the dust. The rapid rotation force allows the dust to separate dust & garbage from suction Dual Design - Featured with dual function Handheld/push rod to meet your cleaning needs. Create clean spaces for you by cleaning every corner of your home and office with Deerma DX900 stick vacuum cleaner. Strong Filtration - Pinhole steel filter enables large suction to filter dust and remove mites. Washable HEPA filter. Built-in 90°dust whirlwind ladder adsorbs dust from the net. Separate cone dust cup, prevent dust reflux. Independent air duct design to enhance separation and unimpeded dust removal. Other Features - Dust cup split design remove the dust cup garbage, easy and convenient. 600W powerful motor, 14000pa strong long-lasting instantaneous suction, low noise less than 75dB. Wire storage design, easy to store. ABS strong wear-resistant material.