1. Multi-functions of vacuuming, mopping and self-cleaning.
2. Dual tank design, separates dirty water from clean water to avoid secondary contamination.
3. With intelligent voice guidance, including: charging status, how to set up water tanks, error information, etc.
4. Easy maintenance: one button to start self-cleaning for roller brush after each use; easy disassembly of roller brush cover; smooth dirt passage for less dirt hidden.