Elecom EX-G Trackball Mouse, 2.4GHz USB Wireless, Ergonomic Design, Thumb Control, Smooth Precise Tracking Roller Ball, 6 Programmable Buttons, Tilt Scroll, Computer Mice for Laptop PC, Windows & Mac

《Ergonomic Unique Design》The mouse design is based on 6 different muscle and skeletal structures of the hands giving special emphasis to the folding actions of the hands to provide a new level of hand comfort. It comes with a RED TRACK BALL, RED COLOR sensing provides more accuracy for current optical tracking technology, a must for high-performance gaming optics system sensors. 《Functional 6 Buttons》It is very easy to move in any direction. It comes with 6 physical buttons on the device and the two extra buttons are the scrollwheel tilting that allow horizontal scroll. ELECOM Mouse Assistant software can be easy to customize button functions, it is available to download from ELECOMUSA website. 《Optical Tracking Technology》The ELECOM trackball provides precise cursor movement for superior accuracy. You can get where you want on the screen quickly with less hand movement, improving productivity and efficiency. 《DPI Cursor》The DPI button can easily change between 750(LOW) and 1500(HIGH) DPI, making the movements of your cursor faster or slower. 《Easy Maintenance》The ball is held in place by the ball bearings, but can easily be popped out of the device, by pushing it through the hole in the bottom and it can be easily cleaned.