1) Powerd by 7.4V2000mAH Li-ion Battery;
2) USB charger included, output 9V500mA, charging time appr. 4-5hours;
3) Home Vacuum class hypa filter.
4) Lower noise
5) one sucker included.
6) ABS material.
7) On/Off switch
8) easily remove rubbish and wash filter.
9) Packing:  54.5*39.5*54.5cm, 20pcs/ctn/18.5/17.5