2.4 GHz Radio Frequency Wireless Technology: With 2.4 GHz RF wireless technology you can enjoy working at any angle and at a distance of up to 30 feet.DPI Switch Button: Quickly and easily adjust DPI resolution (800/1200/1600 dpi) for a faster response with the convenient DPI Switch located at the top of your mouse.Ergonomic Design: The iMouse G25 ergonomic design provides a comfortable grip and eliminates hand strain, while giving great cursor control.Battery-Saving: Use the battery-saving on/off power switch on mouse base to extend battery life and reduce the need to change batteries.Internet Navigational Buttons: Two Internet navigational buttons, back and forward, are conveniently located on the left side of mouse to provide you with Internet browser control with minimal hand movementAdvanced Laser Sensor Technology: The advanced laser sensor technology lets you work on any surface with improved speed, accuracy and reliability than traditional mice.Certificates: FCC, CE, ROHS, IC