At first I thought they had a volume control. They don't, but it has an on/off switch, which is handy and I could give them a higher rating, except the sound quality is lame and volume is lacking. In addition, the connector is not suitable for my mobile phone. I have to play with it by plugging and unplugging it multiple times to get the connection. I will return them and continue my search for a decent EMI free headset.
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