FB M570 with 3YR BSS

first of all this is not a mouse for everyone average PC users my proper will be better off with more affordable standard Mouse but anyone who spends a lot of time using Mouse should consider trackball instead of moving entire Mouse putting strain on your wrist and developing carpal tunnel trackball Mouse lets you use your thumb only to move cursor across the screen this is great for any application where a lot of fast and repetitive movement are made primarily any type of Kelly design Photoshop video editing and similar I am a longtime user of the previous M 570 model and wouldn't trade it for anything in the world as I find it to be one of the most economic mice on the market just the very fact it survived in its original unchanged form for almost eight years testifies it was a success so what does the new model break first and most obvious feature is the ability to kill the mouse by