The Sandberg USB+RJ9/11 Office Headset Pro Stereo is of excellent quality and can be used, for example, for your home office, workplace, or study. The microphone is located on the flexible arm, ensuring that the other person can hear you clearly. A speaker for each ear also means that the playback of the other person's speech is clear and distinct. The discreet lightweight design with soft ear cushions and adjustable headband provides you with optimal comfort. Built-in max volume of 118 db to avoid hearing damage. Connects via USB / RJ9 / RJ11 port and works immediately.