Model: BK9801TCategory: wireless keyboardApplicable models: generalInterface: BluetoothCable length: 0Product size: 41.2*14.2*2CMProduct weight: 0.51Whether to support ergonomics: supportPacking list: keyboard, charging cable, manualMaterial ABS plasticSupport system iOS, Android, WindowsNumber of keys 78 keysWireless/Bluetooth solution Nordic (nRF51802) Bluetooth + 2.4G dual modeBluetooth version Bluetooth 4.2Keyboard life (number of keystrokes) 5 million timesResponse speed 30 millisecondsWireless/Bluetooth transmission distance 10 metersWorking current/voltage: 1mA/3.7V (typing), 7mA/3.7V (touching)Built-in lithium batteryBattery type & capacity: polymer soft pack lithium battery 503450-1000mAhCharging time 5 hoursCharging port type TYPE-CUse time more than 6 hoursStandby time> 6 months (when the backlight is not turned on)Regular color blackProduct net weight 370gPackage gross weight 500gProduct size 36.5*13.7*1.3cmPacking size 40.5*14.2*2cm