Shensee 2.4GHz Mini High Speed 1500D Wireless Optical Mouse For PC Laptop Power Supply: 1 x AA Battery (Not included) Up to 10 meters of operating distance With 3 Keys, including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing Dimensions (L / B / H): 9.4x5.3x2.7cm Wireless transmission, the longest sensing distance up to 10-15 meters