1.The utility model patented fan package, stronger suction, and the two-speed adjustment can be used to suck at will. 2.Vortex air duct, double-layer filtration not let go of the sundries; detachable pinhole filter so no need to replace the filter. 3. Universal Type-C interface ready to be charged; compatible with most mobile phone and digital product charging cables , easy to charge anytime, anywhere. 4. Built-in dual protection smart chip, automatic shutdown protection when the battery temperature is higher than 80 â??. 5. Large-capacity 3-cell lithium battery, long-lasting battery life, ready to use at any time. 6. Large-capacity dust bucket, split type, larger installation; detachable split type dust removal for the effortless cleaning 7. Low operation noise without disturbing.