EagleTec MR5M2448 2.4GHz Wireless Optical Mouse, Switchable DPI 1000/1500/2000,5 Buttons, 2 Programming Keys with Nano USB Receiver (Black Color) 2.4GHz wireless signal, ergonomic and comfortable Switchable 1000/ 1500/ 2000 DPI settings Five button design: Customizable for a variety of functions Soft rubber grips for comfortable use, automatic sleep and smart shutdown LED indicator, 10 meter operating range