[2.4GHz wireless connection] Please note that it is not a Bluetooth connection. Even with a transfer distance of up to 10m, it is a 2.4GHz wireless numeric keypad that can be operated comfortably with stable communication. Since this product is equipped with keys such as tab, work efficiency is greatly improved when using Excel and spreadsheets. 【Ergonomic Design】 Ergonomic tilt reduces stress when typing. Since a special round key is adopted, there are few typos and it is easy to type. Due to its thin and lightweight design, it is convenient to carry and is ideal for working in cafes. [Energy-saving design] It can be fully charged in 1 hour and can be used continuously for about 40 hours. In addition, it is an energy-saving design that enters power-saving mode after 20 seconds of inactivity, and enters smart sleep mode after 10 minutes of inactivity. [Easy operation] There is no need to install a dedicated driver, just plug the receiver into a USB port and use it. It is compatible with Windows OS.