CA-M2 Brand: Clean audio Model: CA-002U+CA-DPA3 x 2
Series: UHF true diversity
Frequency:748.3-757.7 MHz(choose)
Material: Receiver:metal,Transmitter:metal 
Rugged all-in-one wireless system with
high ¬exibility for broadcast quality sound
> Excellent sound and construction quality
> Exceptional easy to use and fast setup time
> Powerful and reliable wireless transmission
> Transmission Range : up to 100 meters feet
> Up to 8 house of operation time