settings, but these SOLITUDE phones are set to only work with the A. My size 8 foot fits with a little bit of extra room. This extension worked perfectly. just used some electric tape and built up a barrier on both sides of the grooves to keep them from moving. For the price, they are an absolute steal! ? The description details how its driverless requiring no extra software. When ordering go up a size Also, for your interest, there is already a release of "The Life Aquatic with Steve Zissou" as a region "B" release due for shipping in a few days (25th June 2018. Other than that they are ok for home use. Because you likely have women in your life who would love this product for this reason, and it would be awesome of you to pass this info along.