Perixx PERIMICE-711, Wireless Ergonomic Mouse - 2.4G - Up to 30 Ft Operating Range - Ergonomic Right Handed Design - 1000/1600 DPI Optical Resolution - Piano Finish Design - 2AAA Brand Batteries Wireless 2.4G Technology with 30 Ft Operating Range 1000/1600 dpi Optical Resolution with DPI Switch Ergonomic Right Handed Design with Piano Finish Color On/Off Power Switch with Battery Low Indicator Nano Receiver with Storage Compartment