Westone UM1 Single-Driver Universal-Fit In-Ear Musicians&rsquo; Monitors with Removable MMCX Audio Cable - Charcoal WESTONE SOUND FOR THE BUDGET MUSICIAN: The UM1 uses a proprietary, single balanced-armature driver to deliver a dynamic and articulate soundstage with enhanced sonic detail and extended frequency range, and all the detail and clarity musicians have come to expect from a professional in-ear monitor THE MOST COMPACT, LOW PROFILE, ERGONOMIC DESIGN IN THE WORLD: Designed and built to perform in the most demanding environments, the compact, low-profile, ergonomic design of the UM1 is incredibly comfortable, and can be worn for hours and hours. Westones silicone and comfort foam eartips enhance the performance of our IEMs by providing superior noise isolation and ensuring a superb fit. ROUND MMCX AUDIO CABLE: Westones MMCX Audio Round Cable is manufactured using a high-strength, high-flex, ultra-low resistance tensile wire featuring MMCX Audio Connectors, a 3.5mm stereo plug and is perfect for use on-stage, or for personal listening. TECHNICAL SPECS: The Westone UM1 features a full-range, single balanced-armature driver with 114 dB @ 1mW sensitivity, 20Hz - 16kHz frequency response, and an impedance of 19 ohms @ 1kHz IN THE BOX + WARRANTY: Purchase includes; 1 pair Westone UM1 In-Ear Monitors, MMCX Audio Round Cable, 5 pair Patented STAR Silicone Eartips, 5 pair TRUE-FIT Comfort Foam Eartips, Monitor Pouch, Cleaning Tool, and a 1-year warranty. Connectivity technology : Wired