Mosquito Away technology is an option developed by LG, and LG K7i is the first phone in the world (and maybe the last) with this feature. Phone has two versions of back’s cover, and one of them has modem which creates ultrasonic noise with 30 KHz frequency, so people won't notice this sound. Previously LG used this modem in air conditioner and TV.
Apart from this modem, LG K7i will have 5-inch LCD display, 1.1 GHz quad-core processor probably made by Qualcomm, 2GB of RAM, 16GB of internal storage plus microSD slot, 5mpx front camera, 8mpx main camera and 2500mAh battery. Phone for now is available only in India, and it will cost there around 120$. There is a chance, that phone won't be released on other markets than market in India.