Connection method: Bluetooth connectionBattery capacity: 1200MAHOutput power: 5WPower supply mode: Built-in lithium batteryDuration: 4 hoursBluetooth protocol: 5.0Effective distance: 10 metersOperation: TouchApplicable people: GeneralShell material: plasticCabinet material: plasticAppearance size: 160mm * 160mm * 32mmPacking list: a charging line, a manualPower mode: USBColor: blue, green, grey