Operation Style:Membrane Application:portable Application:Desktop Type:2.4GHz Wireless Model Number:504T Name: Standard keyboard:Mini keyboard Style:Minimal colour:black Material:ABS Size:12.1*4.5*3.0cm Package Contents: 1* remote control 1* receiver Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.