The Jabra EVOLVE 30 is a professional headset designed to improve conversations.&lt;br /&gt;&lt;br /&gt;- 3.5mm jack for connectivity to smartphone &lt;br /&gt;- Noise-cancelling mic &lt;br /&gt;- Plug-and-play setup&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Noise-cancelling mic&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;State-of-the-art noise-cancelling microphone eliminates background noise. Your conversation partner wont struggle to hear what youre saying.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;3.5mm jack for better connectivity&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;The 3.5 mm jack lets users connect to their personal device - such as a smartphone or tablet - to work or listen to music wherever they may be.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Plug-and-play setup&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;Works out of the box with all leading systems. Installation is as easy as simply plugging it in.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Jabra Evolve 30 features at a glance&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Made for Voice and Music&lt;/b&gt;&lt;br /&gt;World-class speakers are built for both voice and music. Switch easily between conversations and listening to your favorite tracks.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Passive Noise Cancellation&lt;/b&gt;&lt;br /&gt;Simply wear the headset to eliminate high-frequency noise such as human voices - all thanks to the specially designed ear cushions. We call this passive noise cancellation.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Easy call management&lt;/b&gt;&lt;br /&gt;In-line call controller gives you easy access with large buttons and LED indicators. Pick up or end calls control volume or simply mute the line.&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Jabra EVOLVE 30&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;The Jabra EVOLVE 30 headsets creates a complete concentration zone around you in the noisy open office  so you can stay focused on the job.