ELECOM 2.4GHz Wireless Thumb-Operated Trackball Mouse, 6-Button Function with Smooth Tracking, Precision Optical Gaming Sensor , Red, Red Ball

* 《RED BALL FOR THE BEST OPTICAL TRACKING》 For the tracking accuracy and the best sensor, this item uses a RED BALL. RED COLOR sensing provides more accuracy for current optical tracking technology, a must for high-performance gaming optics system sensors. You will enjoy the results of trackball high performance optical sensors for all movement!! * FUNCTIONAL 6 BUTTONS: You can assign favorite function to each button by using "ELECOM Mouse Assistant" ELECOM Mouse Assistant Software will be available to download from ELECOM NET website. * DPI CURSOR: Designed with a high-performance gaming optics system sensor and lens. 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 rolls on three 2.5 mm large artificial ruby ball bearings. They are extremely smooth and the relatively large size prevents dust and dirt from clogging them. So you don’t have to clean the ball bearings too often. The ball is held in place b...