Wireless Transmission Frequency Band: 2.4G Antenna Type: Ceramic Antenna Wireless Connection Distance: 10 m Microphone Type/Quantity: MEMS Silicone Microphone Microphone Sensitivity: -26 dBFS Audio Sampling Rate: 32K AI Intelligent Noise Reduction: Yes Latency: 20 ms (2.4G Mode) Operating Current (Microphone): 11 mA Battery Capacity: 70 mAh, 3.7V Charging Current: 70 mA Working Endurance: 6 Hours Mobile Phone Connection Method: 2.4G Receiver Connection Power Supply: Type-C OTG 5V Power Adapter Operating Current (Receiver): 37 mA