Wireless Pen Mouse with Presenter 15USD FOB GuagnZhou MOQ:500PCS Interface: USB Resolution: 400/8001200dpi adjust Control Distance: 10M Charger Wrie: 0.8M/1M/1.2M Radio frequency: 2.4GHz Button Life: 3 million cycles IE Home, Back, Forward, laser pointer ,DPI Loop (more Multimedia Function to select) Battery: Build in rechargeable Battery Product Dimensions: 173mm(H) x 18mm(D) Product N.W.: 50g It is tailored as a convenient handy-tool for presentations, teaching, meetings, speeches, training, computer aided design(CAD),browse the wed, and you can use it like a normal wireless mouse. It's very comfortable use it to control you PC. Accurate motion estimation over a wide range of surfaces,even your skin or your clothes.