The Electro-Voice PH-21 is a lightweight, unidirectional Telex condenser headworn microphone designed for clear vocal pickup in hands-free applications. Its adjustable headband features a pivoting boom that rotates for precise microphone positioning and can be worn comfortably with various styles of eyeglasses. The close-talking electret microphone element is housed in a durable, high-impact-resistant enclosure. A spring clip secures the microphone assembly, while the adjustable clothing clip helps reduce cable pull for added comfort during extended use. The PH-21 features a 3-foot cable with a TA4F 4-pin connector for compatibility with the Telex PS-10 power module and WT-50 wireless transmitter. A foam windscreen is included.