Xdoor Mini Air Personal Portable Negative Ions Generator Lanyard Purifier Removal Of Formaldehyde Haze CleanerSpecification:Brand: XdoorColor: White Battery capacity: 300mahBattery: Composite lithium batteryCharging time: about 1-2 hoursShell material: 100% PLAStandby: About 10 hoursFunctions: Produce 20 million negative ions per secondSize: 20*21*80mmNet weight: 28.3gPackage includes:1 x Mini Air1 x Charging cradle1 x Rope1 x Menual