Caps Plus EMS600BKAA-NU E-3Lue E-Blue Mazer II 2500 DPI Blue LED Trendy Optical USB Wired Gaming Mouse, Black E-3lue original, mazer II 500/1250/1750/2500 adjustable DPI, Blue LED USB wired trendy gaming Mouse Model Name: EMS600BKAA-NU 250/500 adjustable polling rate Avago 5090 chipsetdpi switch LED light, different DPI shows different LED Color Without retial packing. Before shipping, We will open box and test it, and change packing with new lighter protective material.