Over the Head Headset Dual Earpiece Digital Signal Processing Technology Enriches Sound Quality Noise-Canceling Microphone In-Line Mute Control Call Answer / End Button In-Line Volume Control USB Connection Comfortable Design Conferencing Compact, Portable Design Dual Color LED Status Lights Revolutionary Wideband Voice Quality Inline Coupler 3 Band Equalizer Allows For The User To Adjust The Frequency Of The Tone For Their Specific Hearing Loss Needs Stereo Sound Low Profile Design Is Ideal for - Video Conferencing - PC Telephony - Other Multi-media Applications Dynamic EQ feature - Optimizes Voice Quality When on Call - Automatically Adjusts the EQ Settings Over the Ear or Behind the Head Wearing Styles Fitted Left & Right Eargel Ideal f/ Professionals on-the-go Easily Tucks Into Travel Case Optional Neckband Kit (sold separately)