Jabra EVOLVE 40 UC mono USB-A headset has advance noise canceling technology built-in.  Evolve 40 is equipped with soft leatherette ear cushions for comfort and used to reduce loud background noise in your environment.  Jabra Evolve 40 UC  mono is also equipped with a busy light to notify co-workers you're on a call.  In addition Evolve 40 Mono is equipped with a 3.5mm jack built as part of the control unit for use for a smart phone  (such as iPhone, Samsung Galaxy) or a tablet  When it's not plugged into the USB port, the headset microphone boom arm fits seamlessly into the headband - the Evolve 40 turns into a personal headphone.

Key Features:

• Hi-Fi wideband Frequency Response
• Digital Signal Processing (DSP)
• USB connection
• 3.5mm jack for Smartphones or tablets
• Noise canceling microphone - Eliminated background noise for the customer
• Optimized for Unified Communication, providing instant “Plug & Play” installation for your headset.
• Microphone boom arm folds into the headband when not on a call
• soft pouch included
• integrated busy-light
• Previous part# 6393-829-209

For more information, see Jabra Evolve 40 Mono datasheet