Negatives: Way too small to incorporate a directional microphone (which minimizes track record noise by choosing up sound from a certain direction) but often has some directional sensitivity. The ear could experience plugged up Except if the hearing support is vented. Costco lists “starting-at” prices to the 3 brand names https://modernsmarthealth.com/product/medical-supplies/physical-aids/hearing-aids/rechargeable-mini-hearing-aids-hearing-amplifier-k88-ear-sound-amplifier-hearing-aids-rechargeable-hearing-aid/