well all i know about razer is actualy poor cuality. my headphones died 3 mounth after i got em got logitech and they lasted for 1,5 years, mose lets see 2 of my friends like razer and i got a logitech mouse, my mouse outlasts 3-4 of there razer mouses and im the sore loser of uss, im not at all some crapy fanboy but iwe not run in to eny luck whit or around razer stuff thats all. magnetic sensor well that sounds cool.