Category: wireless bluetooth keyboardApplicable models: generalInterface: BluetoothCable length: wireless (m)Product size: 222*20*55mmWhether to support ergonomics: supportFolding size: 23.9*5.5*2cmProduct material: metal + ABSFeatures: three-fold foldingApplicable system: Apple Android MicrosoftConnection: Broadcom Bluetooth 3.0Battery: Built-in rechargeable lithium batteryBattery capacity: 400mahCharging time: 4 hoursBattery life: 3 yearsContinuous use time: 100 hoursPacking list: manual, charging cable