Jika barBLUE-TECH technology works on any syrface, including rough grain wood, carpet, sofa cotton cover, granite, shiny surfaces etc, even most glasses USB 2.0 Retractable cable Real resolution 1000dpi Easy to carry, Need any drivers Perfect ergonomic design Suited for your hand, comfortable for using Stylish design The latest stylish design Support Windows 2000/XP/Vista/Win7/8/10, Linux and Mac OS higher versionang sudah diterima lebih dari 3 hari maka barang tidak dapat dikembalikan