FOR CONVENIENCE - Custom fit headset bag included for easy carry and protection. FOR DUAL COMPATIBILITY - Mono and Stereo radio adaptability with built in switch on cable for easy switch. FOR PERFECT SOUND - Independent volume control on each ear with ultra-lite neodymium speakers and 3.5mm input jack for phone connection (AUDIO ONLY). FOR COMFORT - Ultra plush silicone gel ear seals and extra thick head pad with adjustable headband for all day comfort. FOR CLEAR COMMUNICATION - Premier noise reduction rating (NRR) of 24db and electret noise-canceling microphone with preamp on 360 flex boom.