Featuresr bluetooth headset compatible devices with bluetooth such as mobile phoner connect to 2 phones simultaneouslyr built in microphone allows you to have wireless telephone conversationsr voice command say yes or no decide whether to pick a callr bluetooth v41 version can be simple pairing safelyr the qx 01 is a perfect headset to help you keep your hands free whether you are working in the office or driving in your carr in ear design lightweight and portabler it is a sports h