Adopting unidirectional condenser element, it creates superb isolation and unsurpassed gain-before-feedback effect, optimized for vocal and speaking performances.?Convenient multi-channel selector. You can choose the best frequency from the hundreds available forthe best performance effect.?Noise absorption design eliminates external and handing noise completely.?Elegant steel grille provides durable protection to its own shape and element.?Durable structure modular design is easy for assembly and detachment, especially convenient to after-sales service.?Low battery consumption, Adopting two 1.5V AA batteries, it works a longer time than expected.