Ubsmart Bamboo Wireless Mouse Healthy Environmental Protection Radiation protection Adopt the 2.4G frequency technology, working distance can reach to 8M-15M, 2.4G will give you a more comfortable, convenient and exact effect The mouse is sculpted from eco-friendly bamboo(solid construction,anti-static/anti-radiation,durable and recyclable) 3 buttons and a smooth scroll wheel on the mouse.left, right and a middle click button on a scroll wheel,DPI button on the bottom of the mouse to change 1200 or 1600 DPI setting on the fly. Compatible with Windows98/2000/XP/NT/Vista/WIN7 Powered by 2 pcs AAA batteries(Batteries not included)