UM Pro 10 features a proprietary, single balanced-armature driver, that reproduces a dynamic soundstage, with all the detail and clarity that musicians have come to expect from a professional in-ear monitor. The UM Pro 10 will perform in the most demanding environments, and meet the needs of the most discerning musician or music lover. The Westone UM Pro 10 incorporates all the innovations and expertise that Westone has developed in almost 60 years of designing and manufacturing products for the human ear. The compact, low-profile, ergonomic design is comfortable, and can be worn for hours and hours. . Westone’s proprietary silicone and comfort foam eartips are provided in 5 different sizes and enhance the performance of our In-Ear Musicians’ Monitors by ensuring a superb fit and by provide superior noise isolation. Ambient sound levels are reduced an average of 25 dB, which makes UM Pro 10 ideal for use onstage or in other noisy environments.