Our products are designed to ease your technical woes, not add to them. Our friendly US-Based support is here to help WIDE COVERAGE: Over 330-feet (100m) in open areas or 200-feet (60m) with obstacles providing you with lots of flexibility when filming MANY USES: Wireless receiver accommodates 2 WMIC80 transmitters, perfect for EFP/ENG, recording interviews, vlogs and more The Movo WMIC80TR /b is a UHF wireless lavalier microphone system that operates over UHF frequencies of 568 MHz-599 MHz. It has 2 groups of 48 selectable channels (96 unique frequencies) and can operate and connect at over 330 feet (more than a football field away). Whether your recording and transmitting audio from a wedding, social event or even an up and close interview the WMIC80 will provide HQ satisfactory audio for all your needs. You can attach your receiver unity directly to your shoe mount on your camera to sync the audio right to your camera. br br The included omnidirectional lavalier microphones provide uniform frequency response and limits unwanted noise pickup. /b To reduce hiss, it is highly recommended to turn-off the auto gain control in your camera settings menu.