EH0163B Features This 2.4G RF mini air mouse is convenient & efficient for conference， presentation and lecturing 82 key and high sensitivity touchpad design 2.4 g RF wireless connection， convenient to use Equipped with USB transceiver， plug and play Equipped with LED backlight QWERTY keyboard layout Equipped with code function to eliminate radio interference Laser pointer shaped design is perfect for business presentations Equipped with touchpad vertical 90-degree flip switch (Fn + ESC key) Equipped with Windows Multimedia control key (GOOGLE TV hotkey) Fully support multi-lingual and multi-touch Allows you to share large screen color TV and projector in long distance Compact shape， easy to carry Equipped with a scroll bar and support page turning Easy to pairing General Specs Model KP-810-10A Color Black Type 2.4G RF mini air mouse Operation Distance 10 meters (radius) Battery Capacity 400mA Transmission Power Max +4 dBm Operating Voltage 3.7V Operating Current  <50mA Charging Voltage 4.2V - 5.05V Charging Current  <350mA Sleep Current  <1mA Standby Time 600 hours Battery Built-in rechargeable lithium battery Supported System Windows (all) Linux (Debian-3.1， Redhat-9.0， Ubuntu-8.10， Fedora-7.0tested) DOS， BOIS， Android PC OS， Mac OS， IOS Application  Home entertainment， real estate accessories， training， conferences， speeches， car PCs， PC network entertainment， KTV VOD system， and can work with projectors or network TVs (Google TV Box)  Package Details Weight: 167.99 g Size: 22.00*12.5*2.00 cm Package Includes * KP-810-10A 2.4G RF Mini Air Mouse * Mini Wireless Keyboard Touchpad * USB Cable (1.1M) * USB Transceiver * Manual