fashionable design, Multifuntional mouse with laser pointer Page up and down. CE &ROHS multifunctional wireless presenter 2.4GHz Radia frequency 2pcs 3A batteries trackball mouse The trackball presenter has two pattern:M1 & M2 Function:(M1) open your outlook express ,update desktop,visit website ,page up and down ,switch screen .laser pointer ,mouse R key & L key and trackball(M2)close current ...