ARCTIC K481-US Wireless Keyboard, Touchpad, Powerful 2.4GHz Frequency, Touchpad - Black Using the USB signal receiver that is included, the K481 connects to it wirelessly within a distance of up to 10 meters. Featuring four hot keys for multi-media playback, it is perfect for home entertainment and a good complement for MC001. The K481 is a full-featured keyboard which incorporates a multi-touch pad to take the user experience further. You can navigate the cursor, click left and right, drag and scroll effortless with a swipe on the pad. Operated by two AAA batteries, the K481 enters automatic power saving mode after being idle for 10 minutes.