Use the MSA 30X Sound Amplifier for overall sound amplification to improve your ability to hear sounds around you. Discreet & Comfortable. This small, lightweight earpiece will go virtually unnoticed and is capable of amplifying sound up to 30x. Rechargeable, therefore no batteries need to be changed. Unisex and can be used on right or left ear. The MSA 30X is not a substitute for a hearing aid or intended for use by hearing impaired people. Includes 1 MSA 30X, 6 different sized silicone ear cushions, 1 charging base, 1 adapter and 1 cleaning brush.