Yesido Kr21 Type C Plug Ai Noise Cancelling Lavalier Microphone

Material: ABS Chip: AI7131A + AI7187C Frequency Range: 2.4GHz Sampling Rate: 48KHz 16bit Transmission Delay: 25ms Charging Voltage: DC 4.8V-5.4V Charging Current: TYPE-C 5V/1A (MAX) Battery Capacity: Microphone: 90mAh, Charging Case: 750mAh (Lithium Polymer) Microphone Usage Time: Approx. 7 hours Charging Time: Approx. 1.5 hours Microphone Sensitivity: -38 dBFS (Silicon Microphone) Working Current: 58-65mA Charging Interface: TYPE-C DC5V/1.5A (MAX) Certificate: CE-RED,CE-RoHS