This mouse is with artificial diamond, enchased inside elaborately. As for the artificial diamonds, they are polished artificially. This mouse is the symbol of high taste and extraordinary craft. Synthetic shape for your right or left hand with the optical technology, the motion can be dected on most surfaces, including wood, plastic, paint, etc. 1. 3 buttons 2. Resolution: 800dpi 3. Interface: USB+ PS/ 2 PS/ 2 4. Compatible with win95/ 98/ 2000/ NT/ ME/ XP. Outer packing: 100pcs/ ctn Carton dimensions: 465 x 275 x 475mm N.W.: 23kg G.W.: 25kg