1. Check whether the charge is sufficient 2. Turn on the switch 3. Replace different nozzles according to different occasions 4. This product is a wet and dry vacuum cleaner. When absorbing water, please pay attention to open the front cover to drain in time 5. The rechargeable battery USB shows that red is normal charging and green is full 6. The charging time is about 3-4 hours to be full, and it can be used continuously for about 20 minutes.