No hearing test required! Tuned by professional audiologists to amplify frequencies most commonly associated with mild to moderate hearing loss. Nearly invisible & easy to use. One size fits all, universal left or right fit. Eight channel digital signal processor. Background noise reduction. Advanced feedback suppression. Noise compression technology. Up to 25dB amplification. Contains 1 black HA-1800 Hearing Aid for one ear, 8 batteries (size 10a), and assorted ear tips. We named this model the HA-1800 because this same hearing aid design was formerly sold by a competitor for $1800/each! When that company went out of business, Hearing Assist decided to upgrade the DSP chip for better quality experience, get the American manufacturing plant back to work and lower the price for our customers. This is a very high quality, comfortable, nearly invisible hearing aid available for hundreds, not thousands of dollars! Specifications: 8-channel. Advanced feedback management. 4 memories/multi-gain settings - activated by push button in increments of 5 dB steps. Hearing Assist puts the most advanced electronic technology exactly where it belongs: out of sight. Our CIC is tiny in size and hidden in your ear, yet delivers excellent sound amplification. The HA-1800 has crystal clear digital sound amplification provided by medical grade American digital signal processing chips, and is made in the USA! The HA-1800 is a universal fit, for left or right ear, and comes with an assortment of ear tips to find the best fit for you. Advanced features such as ambient noise reduction, feedback suppression, noise compression technology and four different preset volume levels. Requires use of a size 10 hearing aid battery (one 8-pack of Hearing Assist batteries included). No hearing test required. Enjoy up to 70 hours of use from each battery. Ultra small, discreet, and simple. Press the small button on the end to cycle between four preset volume levels. For mild to moderate hearing loss.