- Overview - Specifications - Brand: YESIDO. - Model: KR21. - Product Type: Microphone. - Receiving End (Plug): Type-C. - Number of microphones: 2 Mini Mic. - Material: ABS. - Color: Black. - Audio Range: 50m. - Sound Delay: 25ms. - Frequency Range: 2.4GHz. - Sampling Frequency: 48kHz, 16bit. - Charging Case (BOX): - - Charging Voltage: DC 4.8V - 5.4V. - Charging Current (USB-C): 5V - 1A (Max). - Battery Capacity:750mAh (Li-polymer). - Microphone: - - Charging Time: About 1.5 Hours. - Usage Duration: About 8 Hours. - Sensitivity: Silicone Mic -38dBFS. - Battery Capacity: 90mAh (Li-polymer). - Receiver: - - Operating Current: 58 - 65mAh. - Charging Interface (USB-C): DC 5V - 1.5A (Max). - Key Features: - - Magnetic Adsorption. - CD-Quality Sound. - Deep Noise Reduction. - In the Box: - - Lavalier Microphone - Charging Cable - User Manual Lavalier microphones: Also known as lapel mics or clip-on mics - are small wireless microphones that are widely used in filmmaking and broadcasting. They are ideal for recording dialogue as they are discreet and unobtrusive and can be positioned close to the mouth while remaining out of sight.