I would not recommend these slippers. The charcoal color is speckled and goes with a wide variety of outfits. I havent done any tests seeing how well they hold, but thuggery will work as back ups. I have several analog watches in both leather and steel bands. I teach a ZOOM class of 90 students and they hear perfectly, much better than the on board mic. Fits perfectly on the buds case but it also comes off easy which is both a good and bad thing. My reviews of the other 2 trimmers on their respective product pages! This will not be the last pair of Fit Flops I purchase so keep on designing new ones. Sadly, I must confess that I do not recommend them. Recently the headphones my students are currently using are dying and we have no money in our budget to replace them.