This appears to be a rechargeable Behind-the-Ear (BTE) hearing amplifier, similar to the G25 model often listed by various manufacturers.
Regino Medicals Limited
+1
Rechargeable: The device is housed in a portable charging case, designed to be recharged rather than requiring frequent battery replacements.
Design: It features a BTE design with a plastic casing that rests behind the ear, connecting to a tube and tip that fits into the ear canal.
Features: These amplifiers often include features like noise reduction technology and adjustable volume settings