This wireless Keyboard is great for the lecturer、 sales manager or presenter. You can make presentation and operate PC wirelessly via this wireless keyboard with 10 meters radius. Using this wireless keyboard and Mouse you can change slides and screen options、 write on the screen、 emphasize words and objects. This wireless keyboard is also great for people who want to watch TV via their PC. They can use this wireless keyboard as remote control to select channels correctly and without moving from their chair.<br><br>- 2.4G wireless keyboard<br>- USB receiver included<br>- Maximum wireless range: 10 meters<br>- Trackball mouse built-in<br>- Built-in 300mAh Li-on battery<br>- Charging time: 4~5h<br>- Working time: 12h<br>- Standby time: 180h<br>- Voltage: 5V<br>- Comes with USB charging cable<br>- Compatible with PC &amp; cell phone<br><br><br />                                                                                                                                Dimensions: 5.98 in x 2.32 in x 0.51 in (15.2 cm x 5.9 cm x 1.3 cm)<br />Weight: 5.54 oz (157 g)<br /><br />