- Brand: YESIDO. - Model: KR20. - Receiving End (Plug): Lightning. - Two Mini Microphone. - Material: ABS. - Magnetic Adsorption. - CD-Quality Sound. - Deep Noise Reduction. - Audio Range: 50m. - Sound Delay: 25ms. - Frequency Range: 2.4GHz. - Sampling Frequency: 48kHz, 16bit. - Box Charging Voltage: DC 4.8V - 5.4V. - Box Charging Current (USB-C): 5V - 1A (Max). - Mic Charging Time: About 1.5 Hours. - Mic Usage Duration: About 8 Hours. - Mic Sensitivity: Silicone Mic -38dBFS. - Receiving End Operating Current: 58 - 65mAh. - Receiving End Charging Interface (USB-C): DC 5V - 1.5A (Max). - Battery Capacity: Charging Case 750mAh (Li-polymer), Mic 90mAh (Li-polymer). - In the Box: - - Lavalier Microphone - Charging Cable - User Manual - Color: Black. 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.