The hearing aid amplifier combines a cosmetically appealing look with the smooth sound an internal speaker. Filter out unwanted noise caused by airflow or wind. Deliver direct, powerful, and smooth sound right into your ear. Moisture resistant provides durability to most forms of moisture and wear. Separate wire and headphone, more convenient and safety. The hearing aid also provides improved technology for reduced electromagnetic interference. This hearing aid is suitable for severe hearing loss people. Smaller than a credit card, this mini hearing aid is discreet enough to fit easily in your pocket or handbag. Item Type: Ear Care. Material:ABS, Size:Free. Model Number: F-139. Color: As Picture, Function: Sound Amplifier, Position: Ear. Use: Digital Hearing Aids, Material: ABS. Sound Gain: 50dB+-5dB.