1)mini optical mouse               2)USB port with 800dpi            3)compatible with window NT
   /ME/2000/XP                    4)keylife:1,000,000

Packing details:                  1)white box packing                 2)one carton packed in 100pcs               3)carton size:31*26*41cm             4)G.W:7.6KGS  N.W: 6.6KGS