This 2.4 Ghz Clear Transparent Flashing Light Optical Cordless Mouse Allows the Operating Distance About 10 Meters, Flexible with Your Use of Distance. It Can Hop Frequency Automatically & Connect Intelligently. It is Powered by One Aa Alkaline Battery. & Its Power Consumption is Low. Compatible with Windows 98 & 2000 & Xp & Windows 7 & Windows 8 & Windows 10, Mac, Ios Etc. It is Very Comfortable to Grip & Use. with Many Colorful Colors Available for You Select. 2 3 & 8 Inch L x 4 7 & 16 Inch W x 1 Inch H