Features: ¡¾2.4G Wireless Microphone System¡¿ One transmitter triggered by one receiver set, adopts 2.4G global free frequency and effective transmission range is up to 30M. ¡¾Real-time Audio Monitoring¡¿ The receiver has a 3.5mm earphone interface, supports real-time audio monitoring to ensure clear recording and keep the microphone work properly. ¡¾Wide Application¡¿ Includes 3.5mm TRS & TRRS audio cable, compatible with smartphone/ camera/ camcorder, suitable for vlog, live streaming, interview, video recording, etc. ¡¾Built-in Rechargeable Battery¡¿ The transmitter and receiver both have built-in rechargeable battery that can be charged via the provided USB cables, long working time and convenient recharging. ¡¾Lightweight and Portable¡¿ Lightweight and compact design, and comes with a zippered storage case, can be placed into your backpack, very convenient to carry around. Specifications: Color: Black Effective Range: max.30M Signal to Noise Ratio: >75dB Sensitivity: 90dB Battery