Les doy 3 estrellas. Love how tall they are for my shortness. There was no reason for this to occur. This is what mine looked like after wearing them for 6 days. The headset/microphone itself does not require USB power to work; only the LED lighting does. Pros:* The form factor is a proven winner. Still charges wireless with case on and great deal. Only time will tell the durability of this keyboard. Its easy enough to switch between high and low depending on the lighting, which helps conserve some power. Ive worn this size for years, it is too short