1) 6 buttons laser mouse 2) 27MHz RF technology 3) USB rechargeable functionality 4) 4-Way Scrolling/tilt wheel 5) Changeable DPI switch among 400,800 and 1200 6) It delivers more precision and responsiveness, while offering smoother tracking on more surfaces than ever before 7) Smart receiver software reduce likelihood of inerferance with other wireless signals 8) Computer/Operating systems: Win98, ME, 2000, XP, VISTA 9) Smart power-saving technology (standby mode) 10) Interface: USB, PS/2,U+P 11) Life cycle: 1,000,000 times 12) Mouse 120x70x40mm 13)Receiver 49x17x10mm