Wireless earphones are divided into three parts.The first part is the sound source,the second part is the receiver, the third part is the headset part,the function of this part is mainly used to convert the signal sent by the mobile phone or receiver into sound and then transmitted to the ears of people. Wireless earphones and wired earphones compared,the difference in sound quality is not big. Wireless is more convenient,mainly in the middle of the line is replaced by radio waves. Compared with wired earphones, wireless earphones have these advantages, abandon the trouble of wired,do the real wireless structure, freedom of movement.A variety of ways to use, a variety of functions, sound quality, noise reduction, call has been greatly improved.It is equipped with a portable case with both charging and storage functions. It is very convenient to charge the dead earphones automatically by putting them into the case.
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Lighting Science Group Corporation (LSG) recently announced that Arizona State University (ASU) has taken another step in its commitment to going green by retrofitting six parking structures on the Tempe campus with new light emissions-diode (LED) fixtures. Changing the existing fixtures To Lighting Sciences LED low bay solution will afford ASU with an annual savings of up to $127,000 in energy and maintenance costs for the six structures that were retrofit.
As part of a Phase II energy conservation and sustainability project underway throughout campus, ASUs partner APS Energy Services replaced over 2,000, 150 W metal halide fixtures with Lighting Sciences 78 W LED low bay luminaires. By replacing existing metal halide fixtures and lamps, ASU will Reduce its energy consumption by 1.5 million kW hours, which is equivalent to the annual greenhouse gas emissions from 208 passenger vehicles.
Lighting Sciences pyramid-shaped LED fixtures are made up of 108 light sources, combining if one light source dims or fails, other light sources remain to provide a reliable level of illumination. The new fixtures are also costly to maintain because they last 50,000 hours , or approximately three times longer than the typical metal halide fixture they replace. 
The latest wireless headset has a professional learning scheme,can learn the functions of various home appliances remote control (TV, VCR, DVB, DVD, etc.),can also be used as a digital SET-top box remote control. Wirelessly listen to most electrical appliances with audio output. Using wireless earphones, you can enjoy exciting programs freely when the TV is silent.Place THE TRANSMITTER NEAR THE elderly, infants, patients and other people in need of care. Use the receiver to hear the voice of the person being cared for, and care is convenient and easy. Adopt THE ORIGINAL IMPORTED TRANSMITTING TUBE AND CORE technology, HIGH sensitivity ANTI-interference, strong signal, outstanding effect, effective range (less than) 30 meters, can be received by the wall.
