The HY's feature a unique design which provides superb performance and number of functions never before available. They are ergonomically designed to ensure comfort and stability for sustained periods of time, without fatigue. The HY 1 and HY 2 are identical in design and function with the exception of the headband. The HY 1 headband is designed for extended wear, and the HY 2 headband is designed to be hidden in the user's hair. The fixed-charge condenser mic element employs a back- electret ty