Innovative Solution The AMERFIST wireless microphone was designed to deliver a high sound quality so everybody can hear your speech clear and concise. The device uses a UHF signal transmission that ensures a crisp and clear sound, eliminating background noise.This microphone lavalier can be used for a great variety of purposes. It can be used for streaming, vlogging, recording, meetings, or only classes, offering a professional ambient to deliver your speech. | Widely Compatible This lavalier microphone is compatible with iOS and Android devices,DSLR Camera, laptop,desktop PC. For below Android 10 version phone, must use a third-party APP software for audio and video recording.iOS devices have not such issue.For iPhone 6/ Android Cell Phones and laptop with 3.5mm Headphone Port,use the receiver directly.For DSLR Camera,iPad,iPhone7/8/9/X/XR/11, USB-C Android phones,use original Usb-C To 3.5mm/Lightning to 3.5mm Cable (excluding), Otherwise, No Sound. | Easy to Use Turn on the transmitter first and then long press " +" key for 10 seconds, the LED screen will display"—" cycle flashing. Then turn on the receiver, the blue indicator flashing, indicating the receiver enters the matching status, wait a few seconds until the indicator stop flashing, paired successfully.(Please Note；Not compatible with Amplifier, Speakers, Bluetooth Speaker).When working with computer,you must choose external microphone mode. | Stable Connection Incorporating a UHF transmitter, this cordless microphone ensures a stable and strong signal transmission with no delays or jamming. Also, the device has an extra-long wireless transmission distance of up to 160ft.When interference or noise occurs, please press and hold the volume “—” of the transmitter until the blue light flashes quickly to switch channels.There are 40 UHF adjustable channels.Microphone for iphone is convenient | Practical Design The AMERFIST lavalier mic incorporates a 400mAh Lithium battery that is fully charged in 3-4 hours and allows a usage time of 6-8 hours. Also, the model is providing 40 frequency channels for selection. If many devices are used at same time, each device need to be paired with different frequency channel.Please pair the transmitter and receiver first, then set the channel.Recording microphone is great.Lapel microphone recording is useful.