The Sidekick In-Ear IFB Monitor is a virtually invisible communications earpiece: invisible headphones designed to deliver the ultimate experience in comfort and intelligibility. It features the world's first micro driver solution where the driver itself fits comfortably and invisibly in the ear canal. With its extremely small and lightweight footprint, The Sidekick is an excellent alternative earpiece to earwigs and eliminates the need for acoustic tubes outside the ear. The Sidekick is extremely comfortable - these headphones are able to be worn for 20-hour shifts with little-to-no fatigue.