built-in large capacity battery, it can be used repeatedly when fully charged, long service life.The cleaner robot can clean underneath furniture, sofas and other areas that are hard to reach, creating a clean and comfortable home.Advanced motor significantly reduces vacuuming noise, the rate of clearing away the dust is higher 99.7%.Advanced Li-ion battery keep maximum runtime and charging performance for years, it can be used repeatedly, long service life.Magic wheel and microcomputer control, it automatically changes directions when encountering obstacles, smart to use. The cleaner robot runs naturally around home to adsorb the dust and soil with the microfiber tissue.Specifications:Color: Black/WhiteMaterials: Plastic+MetalSize: Diameter 23cm , height 6.5cmPower supply mode: USB chargingWorking Time: About 3 hoursBattery capacity: 4500 MaPackage included:1 * Vacuum cleaner1 * English User manual1 * USB Charging Cable