and when they get dirty. 5LB Anchor works perfectly. The 8 mm are VERY DIFFICULT to get closed. the only problem I have had with them is that they are terrible with phone calls. Poor quality paint job. Seed beads are fabulous. I let them charger over night. The headset is well made, sturdy and durable. I hate removing them and having to space them and put them back on. DO NOT BUY.