The Avlex HSP-03 Headset Microphone (formerly called the HS-03) is a 3 mm diameter premium subminiature omni condenser mic on a dual ear mount. It is so small it is almost invisible from a few feet away. Its weight is so light you will quickly forget you are wearing it. Perfect for either speaking or singing, it provides much greater gain before feedback than any lapel mic since it gets the mic element so much closer to the mouth. With many earset and headset mics if the cord is broken near the mic, the mic can't be repaired. Unlike many other earset and headset mics on the market, the HSP-03 has field replaceable cords, and comes with a spare cord. The ultra thin tube can be adjusted in length and the frame is adjustable to accommodate different head sizes. It has a unique "pull, rotate and release" folding ear hook design for easy storage. The HSP-03 ultra low profile mic boom arm can be worn on either side by rotating the ear pieces in the reverse direction. This microphone is rated for 140 dB SPL so it can handle even very loud performers