The wireless headset consists of two parts, a signal transmitter, and a headset (usually a moving coil) with a signal receiving and amplifying device. The transmitter is connected to the signal source, or you can access the front or headphone amplifier before the transmitter to improve the sound quality and adjust the tone. Wireless headset generally refers to the infrared transmission of the signal headset system, this headset refers to the use of radio waves transmission signal headset system.
Infrared headphones operating frequency from a few KHz to a few MHz, the headset supplier of products generally in the effective distance of about 10 meters, the headset to be within the visual range; wireless headset operating frequency VHF 130MHz-200 MHz, UHF 450 MHz-900MHz , Most of the headphones work in the UHF, can transmit up to 100 meters, you can bypass the obstacles. Two or more wireless headphones may interfere with each other, so choose the best time to choose a variety of operating frequency of the species, such a headset, work in the UHF than the interference in the VHF may be small. These two headphones have background noise, more advanced models are used to reduce the noise of the technology. Also note that the use of wireless headset battery time, generally should not be less than 8 hours.