Warranty : 3 Years Features : Operating Distance : 8-10 meters Keyboard Size: 448 x 170 x 26 mm Mouse Size: 105 x 62 x 32 mm Battery: 4X AAA IC For Keyboard : Mosart1386B-3 IC For Keyboard : Mosart3812-3+FTC3065(Pixart) Compact easy to install : Connect the receiver to the USB port & can be place keyboard and mouse upto 7-8 ft from the wireless device, and avoids desktop cables clutter