Features:
- 7 button optical gamer mouse with 2000 dpi optical sensor for enhanced response and accuracy
- Sensitivity adjustment button to switch resolution to 600/800/1200/1600/2000 dpi
- Software included to adjust the horizontal/vertical sensitivity and configure 4 buttons
- Triple fire button: fire 3 times with just 1 click
- Weighted design with rubber coating and Teflon® feet
- Lightweight USB cable for less drag and maximum freedom of movement
- Up to 15 g acceleration tracking and 1 meter/second speed for accurate surface tracking at high speed movement
- 5.8 mega pixels/second image processing for high precision surface tracking
- Includes a full year manufactures warranty
Link 
Trust 7-Button/Wheel USB Optical 2000dpi High Performance Gamer Mouse ~ $8 + S&H 
