4. 1800PA strong suction, multiple filtration system, deep cleaning, more powerful, dust, hair, soybean, melon seeds, biscuit crumbs 2. Sweep, suck and drag , solve a variety of garbage, dust, hair, paper scraps, stains encountered in 1. Intelligent one-key , intelligent technology, no need for tedious operation, one-key machine, so that clean return is simple 3. Easily control different material ground 5. noise reduction, low volume clean, quiet