Product Description Product Ultra-thin Aluminum Alloy Design: This Bluetooth numeric keypad is made of durable, high-quality aluminum alloy. Its ergonomic tilt angle provides a comfortable typing experience and an aesthetically pleasing design. Its slim and lightweight appearance (weighing only 0.46 lbs and measuring 5.7 x 4.4 x 0.47 inches) makes it a perfect fit for your MacBook, MacBook Air/Pro, iMac, PC, Surface Pro, laptop, or desktop computer as a side-mounted external numeric keypad. Bluetooth 3.0 Connectivity: Utilizing Bluetooth 3.0 technology, this 34-key full-size external numeric keypad enables wireless connectivity, extending your existing keyboard with an effective operating distance of up to 10 meters. Note: For laptops or desktops without Bluetooth, a third-party Bluetooth adapter (not included) is required before use. High-Capacity Rechargeable Battery: Features a built-in 160mAh lithium battery. This Bluetooth numeric keypad can be easily charged via the included USB cable, eliminating the need for battery replacements. It also features an automatic sleep function for lower power consumption, demonstrating its energy efficiency and user-friendly design. Press any key to wake the keyboard in 3 seconds. Widely Compatible: This Bluetooth wireless numeric keypad features shortcut keys and low-profile, silent scissor-switch keys for comfortable work on your computer or laptop. Compatible with Windows, Android, iMac, MacBook Pro, MacBook Air, MacBook, Surface Pro, tablets, desktops, laptops, and more. Note: The numeric keypad is not compatible with Chromebooks. Additionally, the page up, page down, search, screenshot, and INS keys do not work on Mac OS, but other keys and the numeric keypad function normally.