The new update they released ended up bricking my mouse, making it useless and unable to be used in any situation even web browsing. According to Typhoon Burner, which is an excellent RAM interrogation tool, you can run this down to CAS10 but it will be at a much lower frequency of 667MHz. They wobble and I am scared to hang anything heavy on them. I have always owned lb Evans (3rd pair)but my last pair was damaged by water. We pay so much money for our devices-pay the $20 for a good charging cable or USB Sync charger and it will last much longer. I decided this wasnt going to get any better, and boxed it up within an hour of opening it and sent it back. I probably should give this a better rating because they do hold up better than Id expected, but it gets a low score because the plastic edges are sharp as knives. I didnt get a chance to use it while driving, so I cant be certain how well the noise cancellation is. I needed a rack for my clothes and jackets in the kitchen. Always stays centered on your neck - fantastic feature.