The brand-new Philips USB Wired Mouse SPK7101 comes with comfortable smooth coating, let you adjust to fit your palm and the compact structure aids to fit easily in your bag Finely engineered Philips USB Wired Mouse featuring Build-in weight balance system and ambidextrous shape, feels good in both right and left hand Presenting the High-definition optical tracking brought you by powerful Optical Sensor, lets you work on all surfaces hassle-free The new Wired Business Mouse unveils 1000DPI, 3 Keys with 3million times lifetime, USB 2.0 connectivity and plug & play profile, no driver/software installation needed Presenting the Hassle-free Philips Manufacturer warranty covers all manufacturing defects for a period of 12 months (does not cover defects resulted from wear and tear, misuse, and product modification)