Excellent detail and clarity in mids and treble. and fitted well This mouse is very good ergonomic wise and has held up pretty well so far. I plan to purchase more. But the app refuses to get past the initial start screen unless you give it permission to access all your contacts, storage and location (see the screenshot). It keep falling off the earpod case, eventually fell off without her noticing. They feel cheap and nasty, not a good start, the plastics are, quite frankly, horrible. Cost effective and feet friendly. So when I see them for around 30 bucks I snatch them up. Poor sound.