It has Volume control wheel,Detachable and flexible antenna with rotating 360° function Two MIC jacks for transmitter,Automatically matched for Receiver Operation range up to 40m (131 feet) away without obstacles,Powered by two AA size alkaline batteries for both Receiver and Transmitter 12 switchable channels to keep you free from interference,High-band VHF operation for superior sound Compatible for Smartphone, Tablet, DSLR, Camcorder, Audio Recorder, PC etc.