iMicro 2.4Ghz Wireless Keyboard and Mouse Combo (KB-IMK8-M2) Mouse:Type: 2.4GHz Wireless Mouse Buttons: 4 with Scrolling Wheel Operation Range: 33feetOperating Mode: 12mAResolution: 800/ 1200 Discolor: Black and Silver Dimensions (LxWxH): 3.7 x 2.5 x 1.4 inch Weight: 0.13 lbs. Keyboard:Type: 2.4GHz Wireless Keyboard Key Number: 103 keys (by language)Buttons: 8 Multimedia Hot Keys Operation Range: 33feetOperating Mode: 5mAColor: Black Dimensions (LxWxH): 17.5 x 6.7 x 1.0 inch Weight: 1.43 lbs. Receiver:Type: 1 Nano Receiver Interface: USB 2.0Weight: 0.06 lbs.