|Description from Amazon USA|
HISONIC HS-707 VHF wireless lapel / headset microphone is excellent for camcorder use with the included bonus stereo cable and stereo adapter. Not like the FM type systems that you might find elsewhere, this VHF wireless microphone system is crystal controlled for no drift performance in the VHF 200+ MHz. Its frequency spectrum is far away from the FM radio stations that may bleed into the FM wide modulation units. The ideal use for this system with a camcorder typically would be recording a speaker who is too distant for the camcorder's own internal microphone to pick up clearly enough. In this case the speaker would use the small clip on lapel microphone (or the headset microphone) and the belt pack transmitter to transmit his voice to the mini receiver which would be plugged into the camcorder's 1/8" MIC jack. With the included STEREO cable and STEREO adapter for CAMCORDER use, the sound from the wireless microphone will be recorded on BOTH left and right channels of the soundtrack on the video recording. Four different frequency sets are available so that up to four systems can be used in the same location without interference from each other. Specifications: Wireless Mic: Carrier Frequency: 230.00 - 270.00MHz; Output Level: 10MW S/N Ratio: 75dB; Modulation: FM; Maximum Deviation: 30KHz; Output Impedance : 600 Ohms; Transmission radius: 150 feet; Receiver: Carrier Frequency:230.00-270.00 MHz; RF Sensititvity:20dB/uV, S/N Ratio:50dB; Frequency Response:80 -12500 Hz; Audio output Level: 10mV; Power : AAA Battery X 2 ,9V Battery (Included). Packages includes: A Headset Boom Microphone with an ear cushion; A Clip On Lapel / Lavaliere Microphone; A Belt Clip (Body Pack) Transmitter; Deluxe Wireless VHF Receiver with Telescopic Antenna; Padded Carrying Case; 2 Standard AA Batteries for the Receiver; 1 Standard 9 Volt Battery; 1 1/8" mini plug cable to 1/4" microphone plug; An adaptor from 1/4" to 3.5mm for all types of Camcorders.