Feature:1. This wireless BT keyboard is made from quality aluminium alloy material, with touchpad for improving the working ability.2. This wireless keyboard is compatible with most tablet devices of 7 to 7.9 inches, providing more convenience.3. With portable and ultraslim design, you can carry it on a business trip without feeling a burden.4. Adopting BT 3.0 for more stable performance. Specially designed for Windows, for Android, you can switch the mode freely.5. With lightweight, silent typing, waterproof and dustproof feature, this wireless keyboard is comfortable to type.Specification:Item Type: Wireless KeyboardMaterial: Aluminium AlloyBT Version: 3.0Charging Time: 2 HoursLithium Battery Capacity: 200mAh (inclusive)Modulation Method: GFSKSustainable Working Hours: 76 HoursWorking Voltage: 3.1-4.2VWorking Current: 3.0mAButton Force: 50-80gSleep Current: 0.1mAButton Life: 3 Million ClicksCharging Current: 200mAWorking Temperature: -10~+55cStandby Time: 95 Days.Package List:1 xWireless Keyboard1 x User Manual