Perixx PERIMICE-712R, Wireless Mouse for Laptop - Up to 3 Years Battery Life (Daily 6-8 Hours) - 3.93x2.40x1.34 Inch Dimension - 2xAA Brand Batteries - Elegant Rubber Painting - Red Wireless 2.4G Technology with 30 Ft Operating Range 1000/1600/2000 dpi Optical Resolution with DPI Switch High Quality Rubber Coating Surface On/Off Power Switch 2xAA Brand Batteries with Up to 3 Years Battery Life (Daily 4-6 Hours) - Nano Receiver