they dont. Otherwise very happy. These things sound great! If you guys are in need of a budget headset that performs as well as some Turtle Beaches, go for these immediately. Seem like Utaxo is one of the newest brands in audio, and while it might not be the first name you think of when it comes to tech it has still managed to make some great consumer headphones. Also small, and light, but much more tolerance based construction - worked first time - set up was under 10 minutes and $20 dollars less expensive. It is a good mid range priced unit. They also have a grippy sole that avoids slips and lastly they can be easily cleaned [and sanitized] under running water thus sand and mud and all kinds of dirt and odor causing crapazolla can be washed away. The shoes wear like plywood tied to your feet and are hard as rocks. I was on the last latch so there is no room to really go down in size as you lose stomach fat.