For a reliable wired mouse and great everyday performance at an attractive price the kensington mouse in a box k72356eu is the ideal choice the highly responsive 800 dots per inch optical sensor and integrated scrollwheel makes precision clicking and scrolling easier an ambidextrous grip eases comfort and allows for better control the wired usb connector means theres no need to change batteries it works straight out of the box just plug it in and go optical mouse sensor for better co