The Westone UM PRO 20 Earphones are designed for on-stage monitoring and are comfortable and secure thanks to their Up and Over™ cable design that wraps behind your ear. With Westone's True-Fit technology and 50+ years experience working on in-ear solutions, these in-ear monitors are lightweight and comfortable while still providing clear sound output and blocking out extraneous noise. The UM PRO 20 earphones come equipped with dual balanced armature drivers, which are more compact and efficient than traditional dynamic drivers. By combining dual drivers with a sophisticated crossover network, these monitors offer enhanced sonic detail and a wide frequency response. Westone's products are meticulously handcrafted in Colorado Springs, and they provide a 2-year warranty on their products. This ensures that you're not only getting quality craftsmanship, but also peace of mind that you'll get reliable performance day after day.