•Bluetooth technology ,enhancing communication and entertainment versatility
•Suppress noises exceeding 82dB
•Amplify ambient sounds  
•3.5mm  AUX audio input cable                                     
•Sound activated compression -0.01 second reaction time
•Low profile cup design
•LED light
•Voice tracking system for clear communication                                                                                            
•Internal battery chamber,powered by two AAA batteries   
•Rotary control switch and volume                                                                           
•ANSI, NRR: 23dB
•CE EN352-1, 352-4, 352-8, SNR: 24dB