ALLAP W1-1kit UHF Wireless Lavalier Microphone Omnidirection

1 Receiver, 1 Transmitter, A/B Group Total 100 Channel for Canon Nikon Sony Cameras, XLR Camcorder, Phone. With 2 groups (A and B) total 100 selectable channels. A range:538.0 ~ 557.6MHz, B range:566.4 ~ 586.0MHz. the working distance is up to 330-feet in open areas or 200-feet with obstacles. Powered by Two AA batteries(not included) (alkaline battery, nickel metal hydride battery)or 5.0v DC external microUSB power supply. When using external microUSB power supply, the battery in the battery compartment can be charged at the same time.