1. switch off before charging 2. replace different suction nozzles according to different use occasions 3. This product is a wet and dry vacuum cleaner. 4. the filter screen must be installed during use 5. charging battery USB shows that red indicates normal charging and green indicates full charge 6. The charging time is about 3 hours to be fully , and the full charge can last for about 30 minutes. Colour:blue Material:ABS Size:180 x 158 x 66mm Package Contents: 1 x vacuum cleaner 1 x Straw tube 1 x Brush 1 x charging cable 1 x floor brush 1 x Mouthpiece 1 x small brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.