Clearex Sound Enhancement Hearing Aid with one year warranty Feature: Suitable for people who have severe hearing impairment, especially for elderly people. Have more choices for volume control. 7 modes can be chosen: "1" is the minimum volume and "7" is the maximum. "O" is for power off and "N" is for normal work mode. "H" can help you reduce low frequency noise, getting clearer sound. 3 different shape earplugs are provided, which can fit different people's ear. Clamp of this product helps you fix the hearing aid in your pocket.Feature: Suitable for people who have severe hearing impairment, especially for elderly people. Have more choices for volume control. 7 modes can be chosen: "1" is the minimum volume and "7" is the maximum. "O" is for power off and "N" is for normal work mode. "H" can help you reduce low frequency noise, getting clearer sound. 3 different shape earplugs are provided, which can fit different people's ear. Clamp of this product helps you fix the hearing aid in your pocket.Feature: Personal pocket hearing aid Comfortable and natural sound Low noise Adjustable volume control Comfortable wearing in either ear Easy operation Light weight