[Slim Aluminum Design and Ergonomic Tilt]: Bluetooth numeric keypad is made of sturdy, high quality aluminum material for durability. Ergonomic tilt, comfortable and precise control for typing, good elasticity for fast response, comfortable and beautiful typing, slim style appearance, only 0.33 lbs, 5.52*4.56*0.51 inches. Fits perfectly with your laptop, Macbook Air/Pro, iMac, iPad, notebook or desktop as a side external numeric keypad | [Built-in high-capacity rechargeable and safe lithium polymer battery] Easily rechargeable via the included USB cable, no need to replace the battery. The battery lasts around 1 hour and 2 hours on a full 150 hour charge. The Bluetooth wireless keyboard also has an auto-sleep function. Press any key to wake up the keyboard within 3 seconds. (Charging cable included) | Bluetooth 5.0 connectivity: Bluetooth 5.0 technology provides a cable-free and neat connection, and the external 34-key numeric pad extends your existing keyboard. Turn on the numeric keypad and press the pairing button. The numeric keypad is then connected wirelessly to the laptop. The connected devices can then be paired automatically as long as Bluetooth is working and within a range of 10 metres. An LED shows the connection status. Blue light flashes before connection | Compatibility: The Bluetooth numeric keypad is perfect for smartphones, laptops, Destop and tablets and is compatible with Windows, Android, iOS and OS systems and is compatible with Windows, Android, iOS and OS systems. Note: The computer keys and function keys do not work if used with iOS and OS devices, but other numeric keys, symbols and ESC, fingering can be used. | (Your satisfaction is valued): LIAN MO has been deeply involved in computer keyboards and numeric keyboards for many years and we strive for excellence in our products and customer service. Therefore, in addition to the digital keyboard, you will also receive a six-month warranty.