Sony's smallest over-the-counter model sits fully inside the ear canal, so it takes a mirror and good light to spot it on someone. Fitting runs through the Sony Hearing Control app: a short tone check builds the profile, after which bass, treble and volume stay adjustable at any time. Each ear runs on one size 10 zinc-air battery, roughly 70 hours of wear, so there is no charging case to remember on a trip. Launch price was 999 dollars a pair, and street prices at Amazon, Walmart and Best Buy have drifted lower since.
A sensible pick for mild to moderate loss when invisibility matters more than features. Music lovers should look elsewhere: there is no Bluetooth streaming, and the shells carry no buttons, every change goes through the phone. Deep canal placement also means regular cleaning of wax, and those tiny batteries ask for steady fingers.
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