The following are neck-mounted hearing aids for moderate to severe deafness with rechargeable, 16-channel digital noise Reduction and Bluetooth features: 1. Suitable for moderate to severe deafness: - Designed for moderate to severe deafness patients, providing powerful sound amplification and enhancement to meet higher hearing needs. - A high-sensitivity receiver that receives and amplifies subtle sounds to improve the listening experience. 2. Neck hanging design: - The unique neck-mount design reduces the pressure on the ears and provides a comfortable and stable wearing experience. - Small and light, easy to carry, no need to bear the burden of the ears for a long time. 3. Rechargeable function: - Built-in rechargeable battery, saving you the trouble of frequent battery replacement. - One charge can provide long-lasting power support, providing users with a convenient experience. 4. 16-channel digital noise REDuction: - Powerful digital noise Reduction technology, effectively filter background noise and interference sound, provide clearer and more accurate sound. - Multi-channel design, making the hearing more comprehensive and the signal more real. 5. Bluetooth function: - Bluetooth wireless connection function, which can be connected with smart phones, computers and other devices to realize wireless calls and music playback. - Convenient controls and adjustments, volume and audio mode can be easily adjusted via Bluetooth connection.