Soundplus is new technology. A compact personal amplifier for one-to-one listening,television listening, or small group conversations. A regular hearing aid is non-selective,and will amplity all sound, including background noise.Soundplus will help you to zero in on one person`s conversation without any need for privacy. Compact and modernized cellular phone design.Enabling to modulate the sound by one`s hearing ability.Hearing clarly near to original sound. Selective sound amplifying and FM Radio receptive. Portable and easy operation. Battery included. 1yr. warranty