FaYkes Dual-Channel 2.4G Wireless Microphone USB Microphone

Product name: wireless microphone Wireless type: 2.4GHz Antenna: PCB antenna Directivity: omnidirectional Frequency response: 80Hz ~ 20kHz Signal-to-noise ratio: 60dB Maximum sound pressure level: Built-in microphone: 120dB Dynamic range: Built-in microphone: 86dB Sound delay: less than 20ms Sensitivity: Built-in microphone: -26dBFS+1dB Interface Type: TX:3.5mm interface RX: USB-C interface & 3.5mm interface Charging box: USB-C interface Battery Type: TX:90mAh 3.7V RX:90mAh 3.7V Charging box: 1000mAh 3.7V Charging time: TX:2 hours RX:2 hours Charging box: 4 hours Battery life: TX:4 hours RX:4 hours Charging box: When fully charged, it can charge 2 transmitters and 1 receiver at the same time, about 3 times net weight: TX:14g RX:20g Charging box: 167 g size: TX:20x53x21mm RX:33x76x13mm Charging box:96x99x37 mm Working temperature: 0℃~50℃ Storage temperature: -20℃~60℃ packing list: Charging box*1 Microphone*2 Receiver*1 Precautions 1. Some cameras are not compatible with the 3.5mm TRRS-TRRS audio cable. You need to purchase a 3.5mm TRS-TRS audio cable yourself. 2. Try not to block the position of the built-in antenna during use, otherwise it will affect signal transmission. 3. Please turn off the transmitter and receiver when charging.