This Verbatim Wireless Mouse and Keyboard features 2.4 GHz wireless performance that allows for lag-free performance. The mouse features Blue LED technology, while the silent keyboard has a full numeric keypad and full-size function keys within a slim design. The mouse uses Blue LED technology that allows it to be used on virtually any surface with precision and control. It utilises a nano receiver for wireless connectivity. This combo comes with 1 AAA battery and 1 AA battery. It's compatible with Mac and Windows platforms. The mouse is ergonomically-designed with a comfortable grip that is best for right handed users. The 2.4 GHz wireless connection delivers lag-free performance.